Health Insurance Coverage: Early Release of Estimates From the National Health Interview Survey, January—March 2011

by Robin A. Cohen, Ph.D., and Michael E. Martinez, M.P.H., M.H.S.A., Division of Health Interview Statistics, National Center for Health Statistics

PDF Version (417 KB)

Highlights

• From January through March 2011, 46.5 million persons of all ages (15.3%) were uninsured at the time of interview, 60.5 million (19.8%) had been uninsured for at least part of the year prior to interview, and 34.2 million (11.2%) had been uninsured for more than a year at the time of interview.
• From January through March 2011, the percentage of children under age 18 years who were uninsured at the time of interview was 6.9%.
• Among adults aged 19–25, the percentage uninsured at the time of interview decreased from 33.9% (10 million) in 2010 to 30.4% (9.1 million) in the first 3 months of 2011.
• Private coverage decreased among near poor adults aged 18–64, from 52.6% in 1997 to 36.1% in the first 3 months of 2011. The uninsured rate (40.2%) was higher than the private coverage rate (36.1%) for this population.
• From January through March 2011, 29.1% of persons under age 65 with private health insurance at the time of interview were enrolled in a high deductible health plan (HDHP), including 8.8% who were enrolled in a consumer-directed health plan (CDHP). More than 50% of persons with a private plan obtained by means other than through employment were enrolled in an HDHP. An estimated 20.7% of persons with private health insurance were in a family with a flexible spending account (FSA) for medical expenses.

Introduction

The Centers for Disease Control and Prevention’s (CDC) National Center for Health Statistics (NCHS) is releasing selected estimates of health insurance coverage for the civilian noninstitutionalized U.S. population based on data from the 2011 National Health Interview Survey (NHIS), along with comparable estimates from the 1997–2010 NHIS. Data analyses for the January–March 2011 NHIS were based on 25,136 persons in the Family Core. Estimates based on this smaller sample size for the first quarter have larger variances, and this should be taken into account when evaluating these findings. Large variances make it more difficult to detect significant differences between estimates. Observed changes between the last two data points should be reevaluated when the next quarter of data becomes available.

Three measures of lack of health insurance coverage are provided: (a) uninsured at the time of interview, (b) uninsured at least part of the year prior to interview (which also includes persons uninsured for more than a year), and (c) uninsured for more than a year at the time of interview. Estimates of public and private coverage are also presented.

In addition to the age groups traditionally used, starting with the June 2011 report estimates for two new age groups are presented: persons aged 0–18 years and adults aged 19–25. These groups are of special interest because of provisions of the Affordable Care Act of 2010 (P.L. 111–148, P.L. 111–152).

For individuals with private health insurance, estimates are presented for enrollment in high deductible health plans (HDHPs), enrollment in consumer-directed health plans (CDHPs), and being in a family with a flexible spending account (FSA) for medical expenses.

This report is updated quarterly and is part of the NHIS Early Release (ER) Program, which releases updated selected estimates that are available from the NHIS website.

For more information about NHIS and the ER Program, see the Technical Notes and Additional Early Release Program Products sections of this report.

Results

Lack of health insurance coverage

From January through March 2011, the percentage of persons uninsured at the time of interview was 15.3% (46.5 million) for persons of all ages, 17.4% (46.2 million) for persons under age 65 years, 21.5% (41.1 million) for persons aged 18–64, and 6.9% (5.1 million) for children under age 18 (Tables 1 and 2). Among adults aged 19–25, 30.4% (9.1 million) lacked coverage at the time of interview in the first 3 months of 2011. Among adults aged 19–25, the percentage uninsured at the time of interview decreased from 33.9% in 2010 to 30.4% in the first 3 months of 2011.

Based on data from the January–March 2011 NHIS, a total of 60.5 million (19.8%) persons of all ages were uninsured for at least part of the year prior to interview (Tables 1 and 2). Adults aged 18–64 were more than twice as likely (26.8%) as children (11.5%) to experience this lack of coverage. Among adults aged 19–25, 40.3% had been uninsured for at least part of the past year.

Data from January through March 2011 also revealed that 12.8% (34.0 million) of persons under age 65 (16.4% of adults and 3.5% of children) had been uninsured for more than a year (Tables 1 and 2). Adults aged 18–64 were more than three times as likely as children to have been uninsured for more than a year (Figure 1). Among children the percentage that had been uninsured for more than a year decreased from 4.5% in 2010 to 3.5% in the first 3 months of 2011. Among adults aged 19–25, 22.7% had been uninsured for more than a year in the first 3 months of 2011 (Table 1).

Public and private coverage

From January through March 2011, 22.7% of persons under age 65 years were covered by public plans at the time of interview (Table 3). More than one-third of children (40.2%) were covered by a public plan, compared with 15.9% of adults aged 18–64 (Figure 1). Public coverage among adults aged 19–25 was 16.9% in the first 3 months of 2011 (Table 3).

From January through March 2011, 61.3% of persons under age 65 were covered by private health insurance plans at the time of interview (Table 3). Almost two-thirds (64.0%) of adults aged 18–64 were covered by a private plan, compared with 54.4% of children under age 18 (Figure 1). Among adults aged 19–25, 53.2% were covered by a private plan in the first 3 months of 2011.

Insurance coverage by poverty status

From January through March 2011, 6.9% of poor children and 11.3% of near poor children (see Technical Notes for definition of poverty) did not have health insurance coverage at the time of interview (Table 4). During the same period, 39.5% of poor and 40.2% of near poor adults aged 18–64 years lacked coverage at the time of interview. The percentage of poor children who lacked coverage at the time of interview decreased from 10.2% in 2010 to 6.9% in the first 3 months of 2011.

From January through March 2011, 83.5% of poor children and 60.5% of near poor children were covered by a public health plan at the time of interview (Table 5). Also based on data for that period, 39.6% of poor adults aged 18–64 were covered by a public plan (Table 5). Public coverage for not poor children decreased from 14.9% in 2010 to 12.4% in the first 3 months of 2011.

From January through March 2011, 11.2% of poor children and 31.4% of near poor children were covered by private health insurance at the time of interview (Table 6). There was an increase in private coverage among not poor children from 81.4% in 2010 to 84.7% in the first 3 months of 2011.

Lack of coverage, by selected demographic characteristics

Race/ethnicity

Based on data from the January through March 2011 NHIS, Hispanic persons were more likely than non-Hispanic white, non-Hispanic black, and non-Hispanic Asian persons to be uninsured at the time of interview, to have been uninsured for at least part of the past 12 months, and to have been uninsured for more than a year (Table 7). More than one-quarter of Hispanic persons were uninsured at the time of interview, and more than one-third had been uninsured for at least part of the past year.

Age and sex

For all persons under age 65, the percentage who were uninsured at the time of interview was highest among those aged 19–25 (30.4%) and lowest among those under age 18 (6.9%) (Table 7). Starting at age 18, younger adults were more likely than older adults to lack health insurance coverage. Among adults in age groups 25–34, 35–44, and 45–64 years, men were more likely than women to lack health insurance coverage at the time of interview (Figure 2).

Other demographic characteristics

Lack of health insurance coverage was greatest in the South and West regions of the United States (Table 7). Among adults who lacked a high school diploma, 30.8% were uninsured at the time of interview, 35.0% had been uninsured for at least part of the past year, and 26.1% had been uninsured for more than a year at the time of interview. These rates are two to more than three times as high as those for persons with more than a high school education. Among currently unemployed adults aged 18–64 years, 55.1% had been uninsured for at least part of the past year and 35.6% had been uninsured for more than a year. Among employed adults aged 18–64, 23.7% had been uninsured for at least part of the past year and 14.3% had been uninsured for more than a year. Married or widowed adults aged 18 and over were more likely to have coverage than those who were divorced, separated, living with a partner, or never married.

Estimates of enrollment in HDHPs, CDHPs, and FSAs

Based on data from the January through March 2011 NHIS, 29.1% of persons under age 65 years with private health insurance were enrolled in an HDHP, including 8.8% who were enrolled in a CDHP and 20.3% who were enrolled in an HDHP without a health savings account (HSA) (Figure 3). (See Technical Notes for definitions of HDHP, CDHP, and HSA.) Enrollment in HDHPs increased from 25.3% in 2010 to 29.1% in the first 3 months of 2011. There was a significant increase in enrollment in HDHPs without HSAs, and in CDHPs, between 2007 (when NHIS started collecting this information) and the first 3 months of 2011.

Based on data from January through March 2011, among persons under age 65 with private health insurance, 26.9% with employment-based coverage were enrolled in an HDHP, compared with 51.9% of those with a private plan that was directly purchased or obtained through means other than employment (Figure 4). The percentage of persons covered by employment-based private plans who were enrolled in HDHPs increased from 15.6% in 2007 to 26.9% in the first 3 months of 2011. The percentage of persons covered by directly purchased private health plans who were enrolled in HDHPs increased from 39.2% in 2007 to 51.9% in the first 3 months of 2011. For persons under age 65, approximately 8% of private health plans were directly purchased (estimates not shown). HDHPs constitute a growing share of both employment-based and directly purchased health plans.

From January through March 2011, among persons under age 65 with private health insurance, 20.7% were in a family that had an FSA for medical expenses (Figure 5). (See Technical Notes for definition of FSA.) This is an increase from 2007, when 16.7% of persons under age 65 with private insurance were in a family with an FSA. However, there has been no significant increase in FSA enrollment since 2009.

Long-term trends in coverage

Lack of health insurance coverage

The percentage of children uninsured at the time of interview decreased from 13.9% in 1997 to 6.9% in the first 3 months of 2011 (Figure 6). Since 1997, the percentage of adults aged 18–64 years who were uninsured at the time of interview was lowest in 1999 (17.8%) and highest in 2010 (22.3%) (Table 1). There has been a generally increasing trend in the percentage of adults aged 18–64 who lacked coverage at the time of interview. Since 1997, the percentage of adults aged 19–25 who were uninsured at the time of interview was lowest in 1999 and 2002 (29.4%) and highest in 2010 (33.9%) (Figure 7). There has been a generally increasing trend in the percentage of adults aged 19–25 who lacked coverage at the time of interview.

The percentage of children who were uninsured during at least part of the year prior to interview decreased from 18.1% in 1997 to 11.5% in the first 3 months of 2011 (Figure 6). However, the percentage of children uninsured during at least part of the year prior to interview has remained relatively stable since 2004 and has ranged from 11.5% to 13.3%. From 1997 through March 2011, the percentage of adults aged 18–64 who lacked coverage for at least part of the year prior to interview was lowest in 1999 (22.2%) and highest in the first 3 months of 2011 (26.8%) (Figure 8).

Among adults aged 18–64, between 1997 and March 2011, the percentage uninsured for more than a year was lowest in 1999 (11.9%) and highest in 2010 (16.8%) (Figure 8). The percentage of children uninsured for more than a year decreased from 8.4% in 1997 to 3.5% in the first 3 months of 2011 (Figure 6).

Public and private coverage

Public coverage rates among both children and adults aged 18–64 years are higher now than in 1997. However, the increase among adults is smaller than the increase among children (Table 3). Public coverage for children has doubled from 20.0% in 1998 to 40.2% in the first 3 months of 2011. Conversely, private health care coverage rates among both children and adults aged 18–64 are lower now than in 1997. Among adults aged 19–25, public coverage increased from 9.1% in 2000 to 16.9% in the first 3 months of 2011, and private coverage has generally decreased from 61.8% in 1999 to 53.2% in the first 3 months of 2011 (Figure 7).

Insurance coverage by poverty status

The percentage of poor children who were uninsured at the time of interview decreased from 1997 through the first 3 months of 2011 (Figure 9). During the same period, the percentage of poor adults who were uninsured remained relatively stable (Figure 10).

Among children, all poverty status groups experienced an increase in public coverage between 1997 and the first 3 months of 2011 (Table 5). However, the largest increase was seen among near poor children, for whom coverage by a public plan more than doubled during the same period.

The rate of private coverage among near poor children was 23.6 percentage points lower in the first 3 months of 2011 than in 1997 (Table 6). As shown in Figure 11, among near poor children the percentage without health insurance and the percentage with private health insurance coverage have declined since 1997, while public coverage increased. Private coverage generally decreased among near poor adults aged 18–64 years, from 52.6% in 1997 to 36.1% in the first 3 months of 2011, so that the uninsured rate is now higher than the private coverage rate for this population (Figure 12). Private coverage among not poor adults aged 18–64 generally decreased from 1997 through the first 3 months of 2011.

References

1. U.S. Government Accountability Office (GAO). Consumer-directed health plans: Early enrollee experiences with health savings accounts and eligible health plans. GAO–06–798. Washington, DC: GAO. 2006.
2. Joinpoint Regression Program, version 3.4 [computer software]. Bethesda, MD: Statistical Research and Applications Branch, National Cancer Institute. 2009.
3. Cohen RA, Martinez ME. Impact of Medicare and Medicaid probe questions on health insurance estimates from the National Health Interview Survey, 2004. Health E-Stats: National Center for Health Statistics. 2005.
4. Lamison-White L. Poverty in the United States, 1996. U.S. Bureau of the Census. Current population reports, P60–198. Washington, DC: U.S. Government Printing Office. 1997.
5. Dalaker J, Naifeh M. Poverty in the United States, 1997. U.S. Bureau of the Census. Current population reports, P60–201. Washington, DC: U.S. Government Printing Office. 1998.
6. Dalaker J. Poverty in the United States, 1998. U.S. Census Bureau. Current population reports, P60–207. Washington, DC: U.S. Government Printing Office. 1999.
7. Dalaker J, Proctor BD. Poverty in the United States, 1999. U.S. Census Bureau. Current population reports, P60–210. Washington, DC: U.S. Government Printing Office. 2000.
8. Dalaker J. Poverty in the United States, 2000. U.S. Census Bureau. Current population reports, P60–214. Washington, DC: U.S. Government Printing Office. 2001.
9. Proctor BD, Dalaker J. Poverty in the United States, 2001. U.S. Census Bureau. Current population reports, P60–219. Washington, DC: U.S. Government Printing Office. 2002.
10. Proctor BD, Dalaker J. Poverty in the United States, 2002. U.S. Census Bureau Current population reports, P60–222. Washington, DC: U.S. Government Printing Office. 2003.
11. DeNavas-Walt C, Proctor BD, Mills RJ. Income, poverty, and health insurance coverage in the United States: 2003. U.S. Census Bureau. Current population reports, P60–226. Washington, DC: U.S. Government Printing Office. 2004.
12. DeNavas-Walt C, Proctor BD, Lee CH. Income, poverty, and health insurance coverage in the United States: 2004. U.S. Census Bureau. Current population reports, P60–229. Washington, DC: U.S. Government Printing Office. 2005.
13. DeNavas-Walt C, Proctor BD, Lee CH. Income, poverty, and health insurance coverage in the United States: 2005. U.S. Census Bureau. Current population reports, P60–231. Washington, DC: U.S. Government Printing Office. 2006.
14. DeNavas-Walt C, Proctor BD, Smith J. Income, poverty, and health insurance coverage in the United States: 2006. U.S. Census Bureau. Current population reports, P60–233. Washington, DC: U.S. Government Printing Office. 2007.
15. DeNavas-Walt C, Proctor BD, Smith JC. Income, poverty, and health insurance coverage in the United States: 2007. U.S. Census Bureau. Current population reports, P60–235. Washington, DC: U.S. Government Printing Office. 2008.
16. DeNavas-Walt C, Proctor BD, Smith JC. Income, poverty, and health insurance coverage in the United States: 2008. U.S. Census Bureau. Current population reports, P60–236. Washington, DC: U.S. Government Printing Office. 2009.
17. DeNavas-Walt C, Proctor BD, Smith JC. Income, poverty, and health insurance coverage in the United States: 2009. U.S. Census Bureau. Current population reports, P60–238. Washington, DC: U.S. Government Printing Office. 2010.
18. Preliminary estimates of weighted average poverty thresholds for 2010 [online]. U.S. Census Bureau. 2011.
19. Pleis JR, Dahlhamer JM, Meyer PS. Unfolding the answers? Income nonresponse and income brackets in the National Health Interview Survey. Proceedings of the 2006 Joint Statistical Meetings [CD-ROM]. Alexandria, VA: American Statistical Association; 3540-47. 2007.
20. Pleis JR, Cohen RA. Impact of income bracketing on poverty measures used in the National Health Interview Survey’s Early Release Program: Preliminary data from the 2007 NHIS. Hyattsville, MD: National Center for Health Statistics. December 2007.
21. National Center for Health Statistics. Health, United States, 2010: With special feature on death and dying. Hyattsville, MD. 2011.
22. Barnes PM, Ward BW, Freeman G, Schiller JS. Early release of selected estimates based on data from the January–March 2011 National Health Interview Survey. National Center for Health Statistics. September 2011.
23. Blumberg SJ, Luke JV. Wireless substitution: Early release of estimates based on data from the National Health Interview Survey, July–December 2010. National Center for Health Statistics. June 2011.

Technical Notes

The Centers for Disease Control and Prevention’s (CDC) National Center for Health Statistics (NCHS) is releasing selected estimates of health insurance coverage for the civilian noninstitutionalized U.S. population based on data from the 2011 National Health Interview Survey (NHIS), along with comparable estimates from the 1997–2010 NHIS.

Three measures of lack of health insurance coverage are provided: (a) uninsured at the time of interview, (b) uninsured at least part of the year prior to interview (which also includes persons uninsured for more than a year), and (c) uninsured for more than a year at the time of interview. To reflect different policy-relevant perspectives, different time frames are used to measure lack of insurance coverage. The measure of uninsured at the time of interview provides an estimate of persons who at any given time may have experienced barriers to obtaining needed health care. The estimate of persons who were uninsured at any time in the year prior to interview provides an annual caseload of persons who may experience these barriers. This measure includes persons who have insurance at the time of interview but who had a period of noncoverage in the year prior to interview, as well as those who are currently uninsured and who may have been uninsured for a long period of time. Finally, the measure of lack of coverage for more than a year provides an estimate of those with a persistent lack of coverage who may be at high risk of not obtaining preventive services or care for illness and injury. These three measures of lack of coverage are not mutually exclusive, and a given individual may be counted in more than one of the measures. Estimates of enrollment in public and private coverage are also provided.

This report also includes estimates of three types of consumer-directed private health care. Consumer-directed health care may enable individuals to have more control over when and how they access care, what types of care they use, and how much they spend on health care services. National attention to consumer-directed health care increased following enactment of the Medicare Prescription Drug Improvement and Modernization Act of 2003 (P.L. 108–173), which established tax-advantaged health savings accounts (1). In 2007, three additional questions were added to the health insurance section of NHIS to monitor enrollment in consumer-directed health care among persons with private health insurance. Estimates for 2011 are provided for enrollment in high deductible health plans (HDHPs), plans with high deductibles coupled with health savings accounts (CDHPs), and being in a family with a flexible spending account (FSA) for medical expenses not otherwise covered. For a more complete description of consumer-directed health care, see “Definitions of selected terms” below.
The 2011 health insurance estimates are being released prior to final data editing and final weighting, to provide access to the most recent information from NHIS. The resulting estimates for persons without health insurance are generally 0.1–0.3 percentage point lower than those based on the editing procedures used for the final data files. Occasionally, because of decisions made for the final data editing and weighting, estimates based on preliminary editing procedures may differ by more than 0.3 percentage point from estimates based on final files.

Estimates for 2011 are stratified by age group, sex, race/ethnicity, poverty status, marital status, employment status, region, and educational attainment.

Data Source

NHIS is the source of data for this report. NHIS is a multistage probability sample survey of the civilian noninstitutionalized population of the United States. The survey is conducted continuously throughout the year for NCHS by interviewers of the U.S. Census Bureau.

NHIS is a comprehensive health survey that can be used to relate health insurance coverage to health outcomes and health care utilization. It has a low item nonresponse rate (about 1%) for the health insurance questions. Because NHIS is conducted throughout the year, yielding a nationally representative sample each week, data can be analyzed weekly or quarterly to monitor health insurance coverage trends.

The sample for NHIS is redesigned about every 10 years. A new sample design for NHIS was implemented in 2006. The fundamental structure of the 2006 NHIS sample design is very similar to the previous, 1995–2005, NHIS sample design. Oversampling of the black and Hispanic populations has been retained, and the 2006 sample design also oversamples the Asian population. In addition, persons aged 65 years and over have a higher probability of being selected as the Sample Adult. The impact of the 2006 sample design on estimates presented in this report is minimal. Visit the NCHS website for more information on the design, content, and use of NHIS.

The data for this report are derived from the Family Core component of the 1997–2011 NHIS, which collects information on all family members in each household. Data analyses for the January–March 2011 NHIS were based on 25,136 persons in the Family Core.

Estimation procedures

NCHS creates survey weights for each calendar quarter of the NHIS sample. The NHIS data weighting procedure is described in more detail at: NHIS data weighting procedure [PDF – 300 KB]. Estimates were calculated using the NHIS survey weights, which are calibrated to census totals for sex, age, and race/ethnicity of the U.S. civilian noninstitutionalized population. The weights for the 1997–1999 NHIS data were derived from 1990-census-based population estimates. Weights for the 2000–2011 NHIS data were derived from 2000-census-based population estimates.

An error was made in the poststratification component of weights from January 2004 through 2008. The error affected “nonminority” person weights. Compared with the corrected weight estimates, those made with the original weights generally differ by 0.01 percentage point, and variances generally differ by 0.001 percentage point.

Point estimates, and estimates of their variances, were calculated using SUDAAN software to account for the complex sample design of NHIS. The Taylor series linearization method was chosen for variance estimation.

Both of the September 2007 Early Release (ER) reports used final in-house design variables for estimating variance for the 2006 estimates. ER reports other than the September 2007 update use ER interim design variables to estimate variance, with the exception of the state-level estimates, which use the final in-house design variables to estimate variance.

Unless otherwise noted, all estimates shown meet the NCHS standard of having less than or equal to 30% relative standard error. Differences between percentages or rates were evaluated using two-sided significance tests at the 0.05 level. Trends in coverage were assessed using Joinpoint regression (2), which characterizes trends as joined linear segments. A joinpoint is the year where two segments with different slopes meet. Joinpoint software uses statistical criteria to determine the fewest number of segments necessary to characterize a trend and the year(s) when segments begin and end. Terms such as “greater than” and “less than” indicate a statistically significant difference. Terms such as “similar” and “no difference” indicate that the estimates being compared were not significantly different. Lack of comment regarding the difference between any two estimates does not necessarily mean that the difference was tested and found to be not significant.

Definitions of selected terms

Health insurance coverage – The “private health insurance coverage” category excludes plans that pay for only one type of service, such as accidents or dental care. The “public health plan coverage” category includes Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plans, Medicare, and military plans. A small number of persons were covered by both public and private plans and were included in both categories. A person was defined as uninsured if he or she did not have any private health insurance, Medicare, Medicaid, CHIP, state-sponsored or other government-sponsored health plan, or military plan at the time of interview. A person was also defined as uninsured if he or she had only Indian Health Service coverage or had only a private plan that paid for one type of service, such as accidents or dental care. The analyses excluded persons with unknown health insurance status (about 1% of respondents each year).

The terms HIKIND, MCAREPRB, and MCAIDPRB refer to questions in NHIS. Data on type of health insurance are collected through the HIKIND question: What kind of health insurance or health care coverage [do you/does person’s name] have? INCLUDE those that pay for only one type of service (nursing home care, accidents, or dental care). EXCLUDE private plans that only provide extra cash while hospitalized. Respondents can indicate private and public plans or indicate that they or family members are not covered by insurance.

Two additional questions were added to the health insurance section of NHIS beginning with the third quarter of 2004. One question, MCAREPRB, was asked of persons aged 65 years and over who had not indicated that they had Medicare. The MCAREPRB question is: People covered by Medicare have a card which looks like this. [Are you/Is person’s name] covered by Medicare? The other question, MCAIDPRB, was asked of persons under age 65 who had not indicated any type of coverage. The MCAIDPRB question is: There is a program called Medicaid that pays for health care for persons in need. In this State it is also called [State name]. [Are you/Is person’s name] covered by Medicaid?

Respondents who were considered insured at the time of interview were asked about periods of noncoverage in the past year. For persons who did not have health insurance at the time of interview, a question was asked concerning the length of time since the respondent had coverage. Respondents who originally classified themselves as uninsured but whose classification was changed to Medicare or Medicaid on the basis of a “yes” response to either probe question subsequently received appropriate follow-up questions concerning periods of noncoverage for insured respondents.

Method 1 estimates are based solely on one question (HIKIND). Method 2 estimates are based on responses to three questions (HIKIND, MCAREPRB, and MCAIDPRB). Prior to 2004, estimates in earlier releases of this report were generated using Method 1. Estimates for 2004 are presented using Method 2 in the figures and both Method 1 and Method 2 in the tables. Estimates using Method 1 for the “uninsured for more than a year” measure excluded persons whose classification was changed from uninsured to either Medicare or Medicaid coverage by either additional probe question. As a result, these respondents did not receive the follow-up question concerning how long it had been since they had coverage. However, they were asked the questions concerning noncoverage in the past 12 months for insured persons. Beginning in 2005, all estimates are calculated using all three questions (Method 2).

Of the 892 people (unweighted) who were eligible to receive the MCAREPRB question in the third and fourth quarters of 2004, 55.4% indicated they were covered by Medicare. Of the 9,146 people (unweighted) who were eligible to receive the MCAIDPRB question in the third and fourth quarters of 2004, 3.0% indicated they were covered by Medicaid.

From July through December 2004 (the third and fourth quarters combined), the estimates (weighted) for the “uninsured at the time of interview” measure decreased from 10.4% to 9.9% for children under age 18 years, from 19.7% to 19.5% for adults aged 18–64, and from 1.7% to 1.2% for persons aged 65 and over with the use of Method 2 as compared with Method 1. The estimates for public coverage increased from 28.1% to 29.6% for children under age 18, from 11.3% to 11.4% for adults aged 18–64, and from 89.5% to 93.3% for persons aged 65 and over with the use of Method 2 as compared with Method 1. The tabulation of “uninsured for more than a year” using Method 1 excludes respondents whose classification was changed to Medicare or Medicaid by either probe question because these individuals did not receive the question concerning duration of noncoverage for persons who are uninsured. The two additional questions had no impact on the estimates for private coverage. Additional information on the impact of these two probe questions on health insurance estimates can be found in “Impact of Medicare and Medicaid Probe Questions on Health Insurance Estimates From the National Health Interview Survey, 2004” (3).

For persons with private health insurance, a new question regarding the annual deductible of each private health insurance plan was added beginning in 2007. For plans considered to be high deductible health plans (HDHPs), a follow-up question was asked regarding special accounts or funds used to pay for medical expenses: a health savings account (HSA) or a health reimbursement account (HRA). Lastly, a new question was added about family enrollment in a flexible spending account (FSA) for medical expenses.

Data on health insurance status were edited using an automated system based on logic checks and keyword searches. For comparability, the estimates for all years were created using these same procedures.

High deductible health plan (HDHP) – An HDHP was defined in 2010 and 2011 as a private health plan with an annual deductible of not less than $1,200 for self-only coverage or $2,400 for family coverage. The deductible is adjusted annually for inflation. For 2009, the annual deductible for self-only coverage was $1,150 and for family coverage was $2,300. For 2007 and 2008, the annual deductible for self-only coverage was $1,100 and for family coverage was $2,200.

Consumer-directed health plan (CDHP) – A CDHP is defined as an HDHP with a special account to pay for medical expenses. Unspent funds are carried over to subsequent years. A person is considered to have a CDHP if there was a “yes” response to the following question: With this plan, is there a special account or fund that can be used to pay for medical expenses? The accounts are sometimes referred to as Health Savings Accounts (HSAs), Health Reimbursement Accounts (HRAs), Personal Care accounts, Personal Medical funds, or Choice funds, and are different from Flexible Spending Accounts.

Health savings account (HSA) – An HSA is a tax-advantaged account or fund that can be used to pay for medical expenses. It must be coupled with an HDHP. The funds contributed to the account are not subject to federal income tax at the time of deposit. Unlike with flexible spending accounts (FSAs), HSA funds roll over and accumulate year to year if not spent. HSAs are owned by the individual. Funds may be used to pay for qualified medical expenses at any time without federal tax liability.

Flexible spending account (FSA) for medical expenses – A person is considered to be in a family with an FSA if there was a “yes” response to the following question: [Do you/Does anyone in your family] have a Flexible Spending Account for health expenses? These accounts are offered by some employers to allow employees to set aside pre-tax dollars of their own money for their use throughout the year to reimburse themselves for their out-of-pocket expenses for health care. With this type of account, any money remaining in the account at the end of the year, following a short grace period, is lost to the employee.

The measures of HDHP enrollment, CDHP enrollment, and being in a family with an FSA for medical expenses are not mutually exclusive. Therefore, a person may be counted in more than one measure.

Directly purchased coverage – Private insurance that was originally obtained through direct purchase or through other means not related to employment.

Employment-based coverage – Private insurance that was originally obtained through a present or former employer or union or a professional association.

Education – The categories of education are based on the years of school completed or highest degree obtained for persons aged 18 years and over. Only years completed in a school that advances a person toward an elementary or high school diploma, General Educational Development high school equivalency diploma (GED), college, university, or professional degree are included. Education in other schools, or home schooling, is counted only if the credits are accepted in a regular school system.

Employment – Employment status is assessed at the time of interview and is obtained for persons aged 18 years and over. In this release, it is presented only for persons aged 18–64.

Hispanic or Latino origin and race – Hispanic or Latino origin and race are two separate and distinct categories. Persons of Hispanic or Latino origin may be of any race. Hispanic or Latino origin includes persons of Mexican, Puerto Rican, Cuban, Central and South American, or Spanish origin. Race is based on the family respondent’s description of his or her own race background, as well as the race background of other family members. For conciseness, the text, tables, and figures in this report use shorter versions of the 1997 Office of Management and Budget (OMB) terms for race and Hispanic or Latino origin. For example, the category “not Hispanic or Latino, black or African American, single race” is referred to as “non-Hispanic black, single race” in the text, tables, and figures. Estimates for non-Hispanic persons of races other than white only, black only, Asian only, or of multiple races are combined into the “other races or multiple race” category.

Poverty status – Poverty categories are based on the ratio of the family’s income in the previous calendar year to the appropriate poverty threshold (given the family’s size and number of children) defined by the U.S. Census Bureau for that year (4–18). Persons categorized as “poor” have a ratio less than 1.0 (i.e., their family income was below the poverty threshold); “near poor” persons have incomes of 100% to less than 200% of the poverty threshold; and “not poor” persons have incomes that are 200% of the poverty threshold or greater. The remaining group of respondents is coded as “unknown” with respect to poverty status. The percentage of respondents with unknown poverty status (19.1% in 1997, 23.6% in 1998, 26.4% in 1999, 27.0% in 2000, 27.1% in 2001, 28.1% in 2002, 31.5% in 2003, 29.6% in 2004, 28.9% in 2005, 30.7% in 2006, 18.0% in 2007, 15.8% in 2008, 12.3% in 2009, 12.2% in 2010, and 11.6% in the first quarter of 2011) is disaggregated by insurance status and age in Tables 4, 5, and 6.

In 2004, the NHIS instrument recorded a much larger than expected proportion of respondents with a family income for the previous calendar year of “$2.” The Early Release (ER) updates from March 2005 through December 2005 used these preliminary data. Following extensive review, the “$2” responses were coded to “not ascertained” for the final 2004 NHIS microdata files. The 2004 estimates of coverage by poverty status were recalculated using the final microdata. The revised estimates were released in the March 2006 ER update and continue to be used in subsequent ER updates. The problem with the “$2” income reports was fixed in the 2005 NHIS.

See the NHIS Survey Description Documents for 1997–2010 for more information on the unknown income and unknown poverty status categories.

Prior to 2007, the “Income and Assets” section in the Family Core component of the NHIS instrument allowed respondents to report their family income in several ways. Respondents were first asked to provide their combined family income before taxes from all sources for the previous calendar year in a dollar amount (from $0 to $999,995). Respondents who did not know or refused to state an amount were then asked if their combined family income in the previous calendar year was $20,000 or more, or less than $20,000. If they again refused to answer or said they did not know, they were not asked any more questions about their family income. Respondents who did reply to the “above–below $20,000” question were then handed a list (flash card) of detailed income categories (top-coded at “$75,000 or more”) and asked to select the interval containing their best estimate of their combined family income. Thus, NHIS respondents fell into one of four categories with respect to combined family income information: (a) those willing to supply a dollar amount; (b) those who indicated their combined family income from a fairly detailed set of intervals; (c) those who said that their combined family income was either $20,000 or more, or less than $20,000; and (d) those unwilling to provide any information whatsoever. However, the flash card approach had a very low item response rate (15%–18%), and this led to income variables such as poverty ratio having relatively high levels of missing data (approximately 30% item nonresponse rate).

In the 2007 NHIS, the family income section of the questionnaire was redesigned to improve the collection of income information and reduce the amount of income nonresponse. Questions used to collect income data from respondents who initially would not indicate the amount of their family’s income in the last calendar year were changed from using a flash card approach to using a set of unfolding brackets. The unfolding bracket method asks a series of closed-ended income range questions (e.g., “Is it less than $50,000?”) if the respondent did not provide an answer to an exact income amount question. These questions utilize a series of income intervals, and respondents answering the complete path of questions would answer either two or three questions. The first follow-up income question asks a respondent if the family’s income is less than $50,000. With this as a starting point, for respondents who answer “yes” to this question, additional questions are asked to determine if the family’s income is below $35,000 and if the family’s income is below the poverty threshold. Alternately, for respondents who answer “no” to the less than $50,000 question, additional questions are asked to determine if the family income is below $100,000 and below $75,000. The pilot test used to develop these questions is described elsewhere (19).

Based on preliminary data from the first quarter of 2007, 56% of the respondents eligible for the modified income follow-up questions answered all the questions in the applicable path. Initial evaluations of the distribution of poverty among selected demographic variables in the first quarter of 2007 suggest that poverty estimates are generally comparable with years 2006 and earlier (20). As a result of the changes in the questions, the 2007 through 2010 poverty ratio variable has fewer missing values compared with prior years. This reflects improved income item response rates.

In 2011, several new unfolding bracket income questions were added to NHIS to improve the assignment to poverty status. Additional questions focused on assessing whether a family’s income was less than 200% of the poverty threshold or 200% of the poverty threshold or more. The question received was dependent on family size. In addition, a question was added for respondents who answered that their family’s income was $100,000 or more as to whether their family’s income was less than $150,000, or $150,000 or more.

NCHS imputes income for approximately 30% of NHIS records. Beginning with survey year 2007, the imputation procedure was modified to take into account the changes made to the income section. The imputed income files are released a few months after the annual release of NHIS microdata and are not available for the ER updates. Therefore, ER health insurance estimates stratified by poverty status are based on reported income only and may differ from similar estimates produced later [e.g., in Health, United States (21)] that are based on both reported and imputed income.

Region – In the geographic classification of the U.S. population, states are grouped into the following four regions used by the U.S. Census Bureau:

Region	States included
Northeast	Maine, Vermont, New Hampshire, Massachusetts, Connecticut, Rhode Island, New York, New Jersey, and Pennsylvania
Midwest	Ohio, Illinois, Indiana, Michigan, Wisconsin, Minnesota, Iowa, Missouri, North Dakota, South Dakota, Kansas, and Nebraska
South	Delaware, Maryland, District of Columbia, West Virginia, Virginia, Kentucky, Tennessee, North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, Oklahoma, Arkansas, and Texas
West	Washington, Oregon, California, Nevada, New Mexico, Arizona, Idaho, Utah, Colorado, Montana, Wyoming, Alaska, and Hawaii

Additional Early Release Program Products

Two additional reports are published through the Early Release Program. Early Release of Selected Estimates Based on Data From the National Health Interview Survey (22) is published quarterly and provides estimates of 15 selected measures of health, including insurance coverage. Other measures of health include estimates of having a usual place to go for medical care, obtaining needed medical care, influenza vaccination, pneumococcal vaccination, obesity, leisure-time physical activity, current smoking, alcohol consumption, HIV testing, general health status, personal care needs, serious psychological distress, diagnosed diabetes, and asthma episodes and current asthma.

Wireless Substitution: Early Release of Estimates From the National Health Interview Survey (23) is published in May and December and provides selected estimates of telephone coverage in the United States.

New measures may be added as work continues and in response to changing data needs. Feedback on these releases is welcome (e-mail).

Announcements about Early Releases, other new data releases, publications, or corrections related to NHIS will be sent to members of the HISUSERS listserv. To join, visit the CDC Mailing List page.

Suggested citation

Cohen RA, Martinez ME. Health insurance coverage: Early release of estimates from the National Health Interview Survey, January–March 2011. National Center for Health Statistics. September 2011. Available from: /nchs/nhis/releases.htm.

Figures

Figure 1. Percentage of persons without health insurance, by three measurements and age group, and percentage of persons with health insurance at the time of interview, by coverage type and age group: United States, January–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2011, Family Core component.

Figure 2. Percentage of persons under age 65 without health insurance coverage at the time of interview, by age group and sex: United States, January–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2011, Family Core component.

Figure 3. Percentage of persons under age 65 who are enrolled in a high deductible health plan without a health savings account or in a consumer-directed health plan, among those with private health insurance: United States, 2007–March 2011

NOTES: HDHP no HSA is high deductible health plan without a health savings account. CDHP is consumer-directed health plan, which is an HDHP with an HSA. The individual components of HDHPs may not add to up to the total, due to rounding. The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2007–2011, Family Core component.

Figure 4. Percentage of persons under age 65 with private health insurance who are enrolled in a high deductible health plan, by source of coverage: United States, 2007–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2007–2011, Family Core component.

Figure 5. Percentage of persons under age 65 with private health insurance who are in a family with a flexible spending account for medical expenses: United States, 2007–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2007–2011, Family Core component.

Figure 6. Percentage of children under age 18 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 7. Percentage of adults aged 19–25 with health insurance, by coverage type, and percentage uninsured at the time of interview: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 8. Percentage of adults aged 18–64 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 9. Percentage of children under age 18 who were uninsured at the time of interview, by poverty status: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 10. Percentage of adults aged 18–64 who were uninsured at the time of interview, by poverty status: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 11. Percentage of near poor children under age 18 with health insurance, by coverage type, and percentage uninsured at the time of interview: United States, 1997– March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Figure 12. Percentage of near poor adults aged 18–64 with health insurance, by coverage type, and percentage uninsured at the time of interview: United States, 1997–March 2011

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Tables

Table 1

Table 1a. Percentage of persons of all ages who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

All ages	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
1997	15.4 (0.21)	19.5 (0.24)	10.4 (0.18)
1998	14.6 (0.23)	18.6 (0.26)	9.8 (0.19)
1999	14.2 (0.22)	18.2 (0.25)	9.3 (0.19)
2000	14.9 (0.22)	18.7 (0.24)	9.6 (0.18)
2001	14.3 (0.23)	18.0 (0.26)	9.3 (0.18)
2002	14.7 (0.22)	18.3 (0.24)	9.3 (0.17)
2003	15.2 (0.24)	18.6 (0.26)	10.0 (0.19)
2004 (Method 1)3	14.7 (0.21)	18.0 (0.23)	10.1 (0.17)
2004 (Method 2)3	14.6 (0.20)	17.9 (0.23)	10.1 (0.17)
2005 3	14.2 (0.21)	17.6 (0.23)	10.0 (0.18)
2006 3,4	14.8 (0.26)	18.6 (0.29)	10.5 (0.22)
2007 3	14.5 (0.29)	18.2 (0.34)	10.3 (0.24)
2008 3	14.7 (0.32)	18.7 (0.33)	10.6 (0.26)
2009 3	15.4 (0.30)	19.4 (0.32)	10.9 (0.26)
20103	16.0 (0.27)	19.8 (0.29)	11.7 (0.22)
20113 (Jan.-Mar.)	15.3 (0.44)	19.8 (0.49)	11.2 (0.38)

See footnotes at end of Table 1e.

Table 1b. Percentage of persons under age 65 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

Under 65 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
1997	17.4 (0.24)	21.9 (0.28)	11.8 (0.21)
1998	16.5 (0.26)	20.9 (0.29)	11.0 (0.21)
1999	16.0 (0.25)	20.4 (0.28)	10.5 (0.21)
2000	16.8 (0.24)	21.0 (0.26)	10.8 (0.20)
2001	16.2 (0.26)	20.3 (0.29)	10.5 (0.21)
2002	16.5 (0.24)	20.6 (0.27)	10.4 (0.19)
2003	17.2 (0.27)	20.9 (0.28)	11.2 (0.21)
2004 (Method 1)3	16.6 (0.23)	20.2 (0.26)	11.4 (0.19)
2004 (Method 2)3	16.4 (0.23)	20.1 (0.26)	11.4 (0.19)
2005 3	16.0 (0.24)	19.9 (0.26)	11.3 (0.21)
2006 3,4	16.8 (0.29)	20.9 (0.32)	11.8 (0.25)
2007 3	16.4 (0.33)	20.5 (0.38)	11.7 (0.27)
2008 3	16.7 (0.36)	21.2 (0.37)	12.0 (0.29)
2009 3	17.5 (0.34)	22.0 (0.36)	12.4 (0.29)
20103	18.2 (0.30)	22.5 (0.33)	13.3 (0.24)
20113 (Jan.-Mar.)	17.4 (0.49)	22.5 (0.54)	12.8 (0.42)

See footnotes at end of Table 1e.

Table 1c. Percentage of persons aged 0–17 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

0-17 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
1997	13.9 (0.36)	18.1 (0.41)	8.4 (0.29)
1998	12.7 (0.34)	17.1 (0.40)	7.6 (0.27)
1999	11.8 (0.32)	16.3 (0.39)	7.2 (0.26)
2000	12.3 (0.32)	16.7 (0.35)	7.0 (0.23)
2001	11.0 (0.34)	15.2 (0.41)	6.3 (0.25)
2002	10.5 (0.32)	14.6 (0.37)	5.6 (0.24)
2003	10.1 (0.34)	13.7 (0.37)	5.3 (0.25)
2004 (Method 1)3	9.6 (0.29)	12.9 (0.33)	5.4 (0.25)
2004 (Method 2)3	9.4 (0.29)	12.7 (0.33)	5.4 (0.25)
2005 3	8.9 (0.29)	12.6 (0.33)	5.3 (0.24)
2006 3,4	9.3 (0.34)	13.0 (0.40)	5.2 (0.26)
2007 3	8.9 (0.40)	12.6 (0.48)	5.0 (0.28)
2008 3	8.9 (0.43)	13.3 (0.49)	5.6 (0.35)
2009 3	8.2 (0.40)	12.8 (0.47)	4.8 (0.31)
20103	7.8 (0.32)	11.6 (0.37)	4.5 (0.23)
20113 (Jan.-Mar.)	6.9 (0.50)	11.5 (0.65)	3.5 (0.33)

See footnotes at end of Table 1e.

Table 1d. Percentage of persons aged 18–64 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

18-64 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
1997	18.9 (0.23)	23.6 (0.26)	13.3 (0.21)
1998	18.2 (0.27)	22.5 (0.30)	12.5 (0.23)
1999	17.8 (0.26)	22.2 (0.29)	11.9 (0.23)
2000	18.7 (0.27)	22.9 (0.29)	12.4 (0.23)
2001	18.3 (0.27)	22.4 (0.29)	12.3 (0.22)
2002	19.1 (0.26)	23.1 (0.29)	12.5 (0.21)
2003	20.1 (0.29)	23.8 (0.31)	13.7 (0.25)
2004 (Method 1)3	19.4 (0.26)	23.2 (0.29)	13.8 (0.21)
2004 (Method 2)3	19.3 (0.26)	23.1 (0.29)	13.8 (0.21)
2005 3	18.9 (0.26)	22.8 (0.28)	13.8 (0.23)
2006 3,4	19.8 (0.33)	24.1 (0.36)	14.5 (0.29)
2007 3	19.4 (0.36)	23.7 (0.40)	14.3 (0.32)
2008 3	19.7 (0.40)	24.3 (0.40)	14.6 (0.34)
2009 3	21.1 (0.37)	25.6 (0.38)	15.4 (0.34)
20103	22.3 (0.35)	26.7 (0.37)	16.8 (0.30)
20113 (Jan.-Mar.)	21.5 (0.59)	26.8 (0.63)	16.4 (0.53)

See footnotes at end of Table 1e.

Table 1e. Percentage of persons aged 19–25 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

19-25 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
1997	31.4 (0.63)	39.2 (0.67)	20.8 (0.51)
1998	29.8 (0.68)	37.8 (0.76)	20.2 (0.62)
1999	29.4 (0.66)	36.9 (0.73)	18.2 (0.53)
2000	31.4 (0.74)	39.4 (0.78)	19.7 (0.57)
2001	30.8 (0.66)	37.4 (0.69)	20.0 (0.56)
2002	29.4 (0.74)	36.7 (0.83)	19.0 (0.58)
2003	32.0 (0.74)	38.4 (0.77)	21.5 (0.63)
2004 (Method 1)3	32.2 (0.69)	38.9 (0.71)	21.7 (0.60)
2004 (Method 2)3	32.1 (0.69)	38.8 (0.71)	21.7 (0.60)
2005 3	31.2 (0.65)	37.9 (0.68)	21.6 (0.54)
2006 3,4	32.3 (0.84)	39.8 (0.91)	22.3 (0.72)
2007 3	30.2 (0.86)	37.5 (0.93)	20.5 (0.73)
2008 3	30.9 (0.87)	39.1 (0.91)	21.2 (0.74)
2009 3	32.7 (0.82)	40.3 (0.87)	22.0 (0.74)
20103	33.9 (0.73)	41.7 (0.78)	24.1 (0.61)
20113 (Jan.-Mar.)	30.4 (1.33)	40.3 (1.43)	22.7 (1.13)

¹A person was defined as uninsured if he or she did not have any private health insurance, Medicare, Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, or military plan. A person was also defined as uninsured if he or she had only Indian Health Service coverage or had only a private plan that paid for one type of service, such as accidents or dental care.

²A year is defined as the 12 months prior to interview.

³Beginning in the third quarter of 2004, two additional questions were added to the National Health Interview Survey (NHIS) insurance section to reduce potential errors in reporting Medicare and Medicaid status. Persons aged 65 and over not reporting Medicare coverage were asked explicitly about Medicare coverage, and persons under age 65 with no reported coverage were asked explicitly about Medicaid coverage. Estimates of uninsurance for 2004 were calculated both without the additional information from these questions (noted as Method 1) and with the responses to these questions (noted as Method 2). Respondents who were reclassified as “covered” by the additional questions received the appropriate follow-up questions concerning periods of noncoverage for insured respondents. These reclassified respondents were excluded in the tabulation of “uninsured for more than a year” using Method 1 in 2004. Beginning in 2005, all estimates were calculated using Method 2. See “Technical Notes ” for additional information.

⁴In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 2

Table 2a. Number of persons of all ages who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

All ages	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Number in millions
1997	41.0	51.9	27.7
1998	39.3	49.9	26.3
1999	38.7	49.4	25.3
2000	41.3	51.8	26.6
2001	40.2	50.4	26.1
2002	41.5	51.7	26.2
2003	43.6	53.1	28.5
2004 (Method 1)3	42.5	52.0	29.2
2004 (Method 2)3	42.1	51.6	29.2
2005 3	41.2	51.3	29.2
2006 3,4	43.6	54.5	30.7
2007 3	43.1	53.9	30.6
2008 3	43.8	55.9	31.7
2009 3	46.3	58.5	32.8
20103	48.6	60.3	35.7
20113 (Jan.-Mar.)	46.5	60.5	34.2

See footnotes at end of Table 2e.

Table 2b. Number of persons under age 65 years who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

Under 65 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Number in millions
1997	40.7	51.4	27.6
1998	39.0	49.5	26.2
1999	38.3	48.9	25.1
2000	40.8	51.3	26.4
2001	39.8	49.9	25.9
2002	41.1	51.2	25.9
2003	43.2	52.5	28.3
2004 (Method 1)3	42.0	51.3	28.9
2004 (Method 2)3	41.7	51.0	28.9
2005 3	41.0	50.9	29.0
2006 3,4	43.3	54.0	30.5
2007 3	42.8	53.5	30.4
2008 3	43.6	55.5	31.6
2009 3	46.0	57.9	32.6
20103	48.2	59.6	35.4
20113 (Jan.-Mar.)	46.2	59.8	34.0

See footnotes at end of Table 2e.

Table 2c. Number of persons aged 0–17 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

0-17 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Number in millions
1997	9.9	12.9	6.0
1998	9.1	12.3	5.5
1999	8.5	11.8	5.2
2000	8.9	12.0	5.1
2001	7.9	11.0	4.5
2002	7.6	10.6	4.1
2003	7.3	10.0	3.9
2004 (Method 1)3	7.0	9.4	4.0
2004 (Method 2)3	6.8	9.3	3.9
2005 3	6.5	9.3	3.9
2006 3,4	6.8	9.5	3.8
2007 3	6.5	9.3	3.7
2008 3	6.6	9.9	4.1
2009 3	6.1	9.5	3.6
20103	5.8	8.7	3.4
20113 (Jan.-Mar.)	5.1	8.6	2.6

See footnotes at end of Table 2e.

Table 2d. Number of persons aged 18–64 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

18-64 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Number in millions
1997	30.8	38.5	21.7
1998	30.0	37.2	20.7
1999	29.8	37.1	19.9
2000	32.0	39.2	21.3
2001	31.9	38.9	21.4
2002	33.5	40.6	21.9
2003	35.9	42.5	24.5
2004 (Method 1)3	35.0	41.9	25.0
2004 (Method 2)3	34.9	41.8	25.0
2005 3	34.5	41.7	25.2
2006 3,4	36.5	44.5	26.8
2007 3	36.3	44.2	26.8
2008 3	37.1	45.6	27.5
2009 3	40.0	48.4	29.1
20103	42.5	51.0	32.0
20113 (Jan.-Mar.)	41.1	51.3	31.4

See footnotes at end of Table 2e.

Table 2e. Number of persons aged 19–25 who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, 1997–March 2011

19-25 years	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Number in millions
1997	7.7	9.7	5.1
1998	7.4	9.3	5.0
1999	7.3	9.2	4.5
2000	8.1	10.2	5.1
2001	8.1	9.9	5.3
2002	7.9	9.8	5.1
2003	8.9	10.6	6.0
2004 (Method 1)3	8.9	10.8	6.1
2004 (Method 2)3	8.9	10.8	6.1
2005 3	8.8	10.7	6.1
2006 3,4	9.3	11.4	6.4
2007 3	8.8	10.9	6.0
2008 3	8.9	11.2	6.1
2009 3	9.5	11.6	6.4
20103	10.0	12.3	7.1
20113 (Jan.-Mar.)	9.1	12.1	6.8

¹A person was defined as uninsured if he or she did not have any private health insurance, Medicare, Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, or military plan. A person was also defined as uninsured if he or she had only Indian Health Service coverage or had only a private plan that paid for one type of service, such as accidents or dental care.

²A year is defined as the 12 months prior to interview.

³Beginning in the third quarter of 2004, two additional questions were added to the National Health Interview Survey (NHIS) insurance section to reduce potential errors in reporting Medicare and Medicaid status. Persons aged 65 and over not reporting Medicare coverage were asked explicitly about Medicare coverage, and persons under age 65 with no reported coverage were asked explicitly about Medicaid coverage. Estimates of uninsurance for 2004 were calculated both without the additional information from these questions (noted as Method 1) and with the responses to these questions (noted as Method 2). Respondents who were reclassified as “covered” by the additional questions received the appropriate follow-up questions concerning periods of noncoverage for insured respondents. These reclassified respondents were excluded in the tabulation of “uninsured for more than a year”using Method 1 in 2004. Beginning in 2005, all estimates were calculated using Method 2. See “Technical Notes ” for additional information.

⁴In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 3

Table 3a. Percentage of persons under age 65 with public health plan coverage at the time of interview, by age group: United States, 1997–March 2011

Public health plan coverage1	Under 65 years	0-17 years	18-64 years	19-25 years
	Percent (standard error)
1997	13.6 (0.25)	21.4 (0.48)	10.2 (0.20)	11.2 (0.46)
1998	12.7 (0.26)	20.0 (0.49)	9.5 (0.21)	9.8 (0.42)
1999	12.4 (0.24)	20.4 (0.46)	9.0 (0.19)	9.5 (0.40)
2000	12.9 (0.26)	22.0 (0.50)	9.1 (0.19)	9.1 (0.42)
2001	13.6 (0.26)	23.6 (0.50)	9.4 (0.21)	9.6 (0.42)
2002	15.2 (0.29)	27.1 (0.54)	10.3 (0.23)	10.9 (0.45)
2003	16.0 (0.31)	28.6 (0.58)	10.9 (0.24)	11.1 (0.42)
2004 (Method 1)2	16.1 (0.29)	28.5 (0.54)	11.1 (0.22)	11.5 (0.42)
2004 (Method 2)2	16.2 (0.29)	28.7 (0.54)	11.1 (0.23)	11.6 (0.42)
2005 2	16.8 (0.29)	29.9 (0.56)	11.5 (0.22)	12.9 (0.51)
2006 2,3	18.1 (0.35)	32.3 (0.69)	12.4 (0.26)	12.3 (0.50)
2007 2	18.1 (0.40)	32.7 (0.77)	12.3 (0.31)	12.3 (0.56)
2008 2	19.3 (0.42)	34.2 (0.79)	13.4 (0.33)	14.0 (0.75)
2009 2	21.0 (0.39)	37.7 (0.76)	14.4 (0.31)	15.0 (0.62)
20102	22.0 (0.38)	39.8 (0.73)	15.0 (0.30)	15.7 (0.55)
20112 (Jan.-Mar.)	22.7 (0.67)	40.2 (1.35)	15.9 (0.49)	16.9 (1.12)

See footnotes at end of Table 3b.

Table 3b. Percentage of persons under age 65 with private health insurance coverage at the time of interview, by age group: United States, 1997–March 2011

Private health insurance coverage4	Under 65 years	0-17 years	18-64 years	19-25 years
	Percent (standard error)
1997	70.8 (0.35)	66.2 (0.57)	72.8 (0.30)	58.4 (0.71)
1998	72.0 (0.36)	68.5 (0.55)	73.5 (0.32)	59.5 (0.71)
1999	73.1 (0.36)	69.1 (0.55)	74.7 (0.33)	61.8 (0.73)
2000	71.8 (0.34)	67.1 (0.53)	73.8 (0.32)	60.2 (0.75)
2001	71.6 (0.37)	66.7 (0.57)	73.7 (0.33)	60.4 (0.73)
2002	69.8 (0.39)	63.9 (0.61)	72.3 (0.35)	60.6 (0.86)
2003	68.2 (0.40)	62.6 (0.60)	70.6 (0.36)	57.7 (0.86)
2004 2	68.6 (0.39)	63.1 (0.59)	70.9 (0.36)	57.1 (0.77)
2005 2	68.4 (0.39)	62.4 (0.60)	70.9 (0.36)	56.5 (0.79)
2006 2,3	66.5 (0.48)	59.7 (0.72)	69.2 (0.43)	56.0 (0.96)
2007 2	66.8 (0.53)	59.9 (0.82)	69.6 (0.47)	58.1 (1.00)
2008 2	65.4 (0.57)	58.3 (0.84)	68.1 (0.54)	55.7 (1.02)
2009 2	62.9 (0.54)	55.7 (0.86)	65.8 (0.47)	52.6 (0.91)
20102	61.2 (0.50)	53.8 (0.75)	64.1 (0.46)	51.0 (0.84)
20113 (Jan.-Mar.)	61.3 (0.89)	54.4 (1.40)	64.0 (0.78)	53.2 (1.69)

¹Includes Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, Medicare (disability), and military plans.

²Beginning in the third quarter of 2004, two additional questions were added to the National Health Interview Survey (NHIS) insurance section to reduce potential errors in reporting Medicare and Medicaid status. Persons aged 65 and over not reporting Medicare coverage were asked explicitly about Medicare coverage, and persons under age 65 with no reported coverage were asked explicitly about Medicaid coverage. Estimates of uninsurance for 2004 were calculated both without the additional information from these questions (noted as Method 1) and with the responses to these questions (noted as Method 2). Respondents who were reclassified as “covered” by the additional questions received the appropriate follow-up questions concerning periods of noncoverage for insured respondents. The two additional questions added beginning in the third quarter of 2004 did not affect the estimates of private coverage. Beginning in 2005, all estimates were calculated using Method 2. See “Technical Notes ” for additional information.

³In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

⁴Excludes plans that paid for only one type of service, such as accidents or dental care. A small number of persons were covered by both public and private plans and were included in both categories.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 4

Table 4a. Percentage uninsured at the time of interview for persons under age 65, by poverty status: United States, 1997–March 2011

Under 65 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent uninsured2 (standard error)
1997	17.4 (0.24)	32.7 (0.80)	30.4 (0.70)	8.9 (0.22)	21.6 (0.59)
1998	16.5 (0.26)	32.7 (0.84)	30.8 (0.79)	8.0 (0.22)	20.7 (0.59)
1999	16.0 (0.25)	32.1 (0.93)	30.7 (0.73)	7.8 (0.20)	20.1 (0.48)
2000	16.8 (0.24)	32.7 (0.89)	31.3 (0.69)	8.7 (0.22)	19.7 (0.51)
2001	16.2 (0.26)	31.0 (0.99)	28.6 (0.69)	8.4 (0.21)	20.3 (0.53)
2002	16.5 (0.24)	28.6 (0.80)	28.3 (0.70)	9.5 (0.24)	20.7 (0.55)
2003	17.2 (0.27)	29.4 (0.91)	30.2 (0.70)	9.1 (0.25)	21.3 (0.52)
2004 (Method 1)3,4	16.6 (0.23)	30.5 (0.93)	29.1 (0.67)	9.4 (0.23)	18.7 (0.48)
2004 (Method 2)3,4	16.4 (0.23)	30.1 (0.91)	28.9 (0.67)	9.4 (0.23)	18.6 (0.48)
2005 3	16.0 (0.24)	28.4 (0.78)	28.6 (0.63)	9.1 (0.22)	18.5 (0.48)
2006 3,5	16.8 (0.29)	29.2 (0.98)	30.8 (0.80)	9.7 (0.29)	17.5 (0.49)
2007 6	16.4 (0.33)	28.0 (1.04)	30.2 (0.91)	9.8 (0.27)	20.8 (0.74)
2008 3	16.7 (0.36)	27.9 (1.08)	30.6 (0.82)	10.2 (0.27)	21.0 (0.73)
2009 3	17.5 (0.34)	30.2 (0.89)	29.4 (0.77)	10.7 (0.29)	22.3 (0.85)
20103	18.2 (0.30)	29.5 (0.83)	32.3 (0.69)	10.7 (0.24)	22.7 (0.95)
20113,7 (Jan.-Mar.)	17.4 (0.49)	27.3 (1.17)	30.2 (1.14)	10.0 (0.48)	22.7 (1.41)

See footnotes at end of Table 4c.

Table 4b. Percentage uninsured at the time of interview for persons aged 0–17, by poverty status: United States, 1997–March 2011

0-17 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent uninsured2 (standard error)
1997	13.9 (0.36)	22.4 (0.99)	22.8 (0.96)	6.1 (0.33)	18.3 (0.90)
1998	12.7 (0.34)	21.6 (1.02)	22.5 (0.97)	4.9 (0.29)	16.5 (0.75)
1999	11.8 (0.32)	21.4 (1.13)	21.6 (0.92)	4.4 (0.29)	14.9 (0.69)
2000	12.3 (0.32)	20.6 (1.04)	21.4 (0.93)	5.3 (0.30)	15.0 (0.72)
2001	11.0 (0.34)	18.8 (1.24)	17.0 (0.85)	4.4 (0.26)	15.5 (0.84)
2002	10.5 (0.32)	15.9 (0.97)	15.7 (0.84)	5.3 (0.36)	14.1 (0.76)
2003	10.1 (0.34)	15.4 (1.06)	14.7 (0.88)	4.8 (0.33)	13.5 (0.67)
2004 (Method 1)3,4	9.6 (0.29)	16.2 (1.23)	15.5 (0.81)	5.0 (0.30)	10.5 (0.56)
2004 (Method 2)3,4	9.4 (0.29)	15.3 (1.17)	15.1 (0.81)	5.0 (0.30)	10.3 (0.56)
2005 3	8.9 (0.29)	13.0 (0.92)	14.7 (0.79)	4.6 (0.30)	11.0 (0.66)
2006 3,5	9.3 (0.34)	12.7 (1.06)	16.5 (1.05)	4.8 (0.39)	10.0 (0.63)
2007 6	8.9 (0.40)	11.4 (1.08)	15.5 (1.10)	4.9 (0.34)	11.8 (1.01)
2008 3	8.9 (0.43)	12.4 (1.13)	15.6 (1.07)	4.8 (0.39)	11.0 (0.97)
2009 3	8.2 (0.40)	11.8 (0.94)	12.1 (0.90)	5.0 (0.39)	9.8 (0.99)
20103	7.8 (0.32)	10.2 (0.96)	12.6 (0.73)	4.6 (0.29)	8.8 (0.89)
20113,7 (Jan.-Mar.)	6.9 (0.50)	6.9 (1.12)	11.3 (1.40)	3.6 (0.48)	12.2 (1.74)

See footnotes at end of Table 4c.

Table 4c. Percentage uninsured at the time of interview for persons aged 18–64, by poverty status: United States, 1997–March 2011

18-64 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent uninsured2 (standard error)
1997	18.9 (0.23)	40.2 (0.88)	34.9 (0.71)	9.9 (0.22)	22.9 (0.58)
1998	18.2 (0.27)	40.8 (1.02)	36.0 (0.83)	9.2 (0.23)	22.2 (0.60)
1999	17.8 (0.26)	39.9 (1.11)	36.3 (0.81)	9.0 (0.20)	22.2 (0.50)
2000	18.7 (0.27)	41.1 (1.05)	37.4 (0.77)	10.0 (0.24)	21.5 (0.53)
2001	18.3 (0.27)	39.5 (1.19)	35.6 (0.78)	9.9 (0.22)	22.1 (0.52)
2002	19.1 (0.26)	37.0 (1.09)	36.2 (0.77)	11.0 (0.25)	23.2 (0.56)
2003	20.1 (0.29)	38.2 (1.19)	39.5 (0.81)	10.6 (0.27)	24.2 (0.56)
2004 (Method 1)3,4	19.4 (0.26)	40.1 (1.10)	36.9 (0.72)	11.0 (0.26)	21.7 (0.54)
2004 (Method 2)3,4	19.3 (0.26)	39.9 (1.09)	36.8 (0.73)	11.0 (0.26)	21.6 (0.54)
2005 3	18.9 (0.26)	38.5 (0.95)	36.6 (0.73)	10.7 (0.24)	21.2 (0.52)
2006 3,5	19.8 (0.33)	40.0 (1.33)	38.6 (0.89)	11.4 (0.31)	20.3 (0.54)
2007 6	19.4 (0.36)	38.6 (1.47)	39.3 (1.01)	11.4 (0.29)	23.8 (0.79)
2008 3	19.7 (0.40)	37.7 (1.49)	39.9 (0.94)	11.9 (0.28)	24.4 (0.83)
2009 3	21.1 (0.37)	42.5 (1.20)	39.1 (0.85)	12.5 (0.31)	26.7 (0.99)
20103	22.3 (0.35)	42.2 (0.99)	43.0 (0.74)	12.6 (0.27)	27.1 (1.10)
20113,7 (Jan.-Mar.)	21.5 (0.59)	39.5 (1.64)	40.2 (1.23)	11.9 (0.54)	27.4 (1.65)

¹1Based on family income and family size, using the U.S. Census Bureau’s poverty thresholds. “Poor” persons are defined as those below the poverty threshold; “near poor” persons have incomes of 100% to less than 200% of the poverty threshold; and “not poor” persons have incomes of 200% of the poverty threshold or greater. The percentage of respondents with unknown poverty status was 19.1% in 1997, 23.6% in 1998, 26.4% in 1999, 27.0% in 2000, 27.1% in 2001, 28.1% in 2002, 31.5% in 2003, 29.6% in 2004, 28.9% in 2005, 30.7% in 2006, 18.0% in 2007, 15.8% in 2008, 12.3% in 2009, 12.2% in 2010, and 11.6% in the first quarter of 2011. For more information on the unknown income and poverty status categories, see the National Health Interview Survey (NHIS) Survey Description Document for years 1997–2005, available from the NHIS website. Estimates may differ from estimates based on both reported and imputed income. See “Technical Notes ” for a discussion of the use of imputed income in the stratification of health insurance coverage by poverty status.

²A person was defined as uninsured if he or she did not have any private health insurance, Medicare, Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, or military plan at the time of the interview. A person was also defined as uninsured if he or she had only Indian Health Service coverage or had only a private plan that paid for one type of service, such as accidents or dental care.

³Beginning in the third quarter of 2004, two additional questions were added to the NHIS insurance section to reduce potential errors in reporting Medicare and Medicaid status. Persons aged 65 and over not reporting Medicare coverage were asked explicitly about Medicare coverage, and persons under age 65 with no reported coverage were asked explicitly about Medicaid coverage. Estimates of uninsurance for 2004 were calculated both without the additional information from these questions (noted as Method 1) and with the responses to these questions (noted as Method 2). Respondents who were reclassified as “covered” by the additional questions received the appropriate follow-up questions concerning periods of noncoverage for insured respondents. Beginning in 2005, all estimates were calculated using Method 2. See “Technical Notes ” for additional information.

⁴In 2004, a much larger than expected proportion of respondents reported a family income of “$2.” Based on extensive review, these “$2” responses were coded to “not ascertained” for the final 2004 NHIS data files. Effective with the March 2006 Early Release report, the 2004 estimates were recalculated to reflect this editing decision. For a complete discussion, see the NHIS Survey Description Document for 2004, available from the NHIS website. The problem with the “$2” income reports was fixed in the 2005 NHIS.

⁵In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

⁶In 2007, the income section of NHIS was redesigned, and estimates by poverty status may not be directly comparable with earlier years. See “Technical Notes ” for further information on the income question changes.

⁷In 2011, several new unfolding bracket income questions were added to the income section of NHIS. See “Technical Notes” for further information on the income question changes.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 5

Table 5a. Percentage of persons under age 65 with public health plan coverage at the time of interview, by poverty status: United States, 1997–March 2011

Under 65 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with public health plan coverage2 (standard error)
1997	13.6 (0.25)	46.1 (1.01)	18.2 (0.56)	5.3 (0.19)	13.2 (0.49)
1998	12.7 (0.26)	44.7 (1.05)	17.5 (0.57)	5.1 (0.23)	13.4 (0.45)
1999	12.4 (0.24)	43.4 (1.04)	20.5 (0.63)	4.8 (0.18)	13.2 (0.43)
2000	12.9 (0.26)	43.7 (1.11)	21.7 (0.62)	5.3 (0.21)	12.8 (0.42)
2001	13.6 (0.26)	45.0 (1.14)	25.0 (0.69)	5.7 (0.21)	13.1 (0.42)
2002	15.2 (0.29)	47.0 (1.07)	27.5 (0.72)	6.1 (0.24)	16.6 (0.45)
2003	16.0 (0.31)	48.8 (1.16)	29.3 (0.75)	6.6 (0.27)	15.8 (0.48)
2004 (Method 1)3,4	16.1 (0.29)	50.7 (1.02)	27.6 (0.69)	6.9 (0.23)	16.0 (0.47)
2004 (Method 2)3,4	16.2 (0.29)	51.1 (1.01)	27.8 (0.68)	6.9 (0.23)	16.1 (0.47)
2005 3	16.8 (0.29)	50.6 (0.98)	30.0 (0.72)	7.4 (0.22)	16.4 (0.48)
2006 3,5	18.1 (0.35)	51.5 (1.17)	30.5 (0.78)	7.5 (0.28)	17.9 (0.64)
2007 6	18.1 (0.40)	53.3 (1.34)	33.9 (0.91)	7.6 (0.30)	18.6 (0.77)
2008 3	19.3 (0.42)	55.5 (1.22)	34.7 (0.92)	8.5 (0.30)	19.4 (0.90)
2009 3	21.0 (0.39)	56.7 (1.06)	36.7 (0.85)	9.0 (0.30)	20.8 (0.88)
20103	22.0 (0.38)	56.0 (0.98)	36.2 (0.63)	9.7 (0.28)	21.0 (0.69)
20113,7 (Jan.-Mar.)	22.7 (0.67)	56.1 (1.66)	37.5 (1.38)	9.2 (0.41)	25.4 (1.66)

See footnotes at end of Table 5c.

Table 5b. Percentage of persons aged 0–17 with public health plan coverage at the time of interview, by poverty status: United States, 1997–March 2011

0-17 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with public health plan coverage2 (standard error)
1997	21.4 (0.48)	62.1 (1.31)	24.3 (0.93)	6.3 (0.32)	21.4 (0.97)
1998	20.0 (0.49)	61.1 (1.34)	22.9 (0.95)	6.0 (0.39)	22.1 (0.95)
1999	20.4 (0.46)	60.7 (1.37)	28.7 (1.15)	6.0 (0.32)	22.2 (0.88)
2000	22.0 (0.50)	61.8 (1.48)	32.4 (1.13)	7.4 (0.39)	22.1 (0.85)
2001	23.6 (0.50)	65.2 (1.47)	37.0 (1.23)	8.1 (0.39)	23.1 (0.94)
2002	27.1 (0.54)	69.0 (1.33)	42.2 (1.18)	8.9 (0.45)	30.7 (0.99)
2003	28.6 (0.58)	72.3 (1.32)	47.2 (1.27)	9.8 (0.48)	28.5 (1.00)
2004 (Method 1)3,4	28.5 (0.54)	72.5 (1.36)	43.4 (1.20)	9.7 (0.45)	30.4 (1.01)
2004 (Method 2)3,4	28.7 (0.54)	73.4 (1.34)	43.8 (1.20)	9.7 (0.45)	30.6 (1.01)
2005 3	29.9 (0.56)	73.3 (1.32)	47.3 (1.21)	10.7 (0.47)	30.8 (1.05)
2006 3,5	32.3 (0.69)	75.8 (1.32)	49.0 (1.45)	10.4 (0.53)	33.1 (1.25)
2007 6	32.7 (0.77)	78.7 (1.38)	53.5 (1.44)	11.0 (0.60)	34.0 (1.54)
2008 3	34.2 (0.79)	79.4 (1.37)	53.4 (1.58)	13.1 (0.62)	35.1 (1.72)
2009 3	37.7 (0.76)	81.4 (1.11)	58.4 (1.42)	13.7 (0.63)	36.1 (2.05)
20103	39.8 (0.73)	82.0 (1.22)	59.2 (1.16)	14.9 (0.57)	38.1 (1.71)
20113,7 (Jan.-Mar.)	40.2 (1.35)	83.5 (1.91)	60.5 (2.27)	12.4 (0.91)	44.1 (3.13)

See footnotes at end of Table 5c.

Table 5c. Percentage of persons aged 18–64 with public health plan coverage at the time of interview, by poverty status: United States, 1997–March 2011

18-64 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with public health plan coverage2 (standard error)
1997	10.2 (0.20)	34.3 (0.93)	14.6 (0.51)	5.0 (0.18)	10.1 (0.41)
1998	9.5 (0.21)	32.9 (1.08)	14.1 (0.53)	4.8 (0.21)	10.0 (0.34)
1999	9.0 (0.19)	30.8 (0.98)	15.4 (0.52)	4.4 (0.17)	9.6 (0.33)
2000	9.1 (0.19)	31.1 (1.00)	15.2 (0.54)	4.5 (0.19)	9.1 (0.33)
2001	9.4 (0.21)	30.8 (1.10)	17.8 (0.62)	4.8 (0.20)	9.4 (0.33)
2002	10.3 (0.23)	32.5 (1.10)	18.3 (0.66)	5.1 (0.22)	11.2 (0.35)
2003	10.9 (0.24)	34.0 (1.19)	18.6 (0.68)	5.5 (0.24)	11.1 (0.37)
2004 (Method 1)3,4	11.1 (0.22)	36.1 (1.03)	18.5 (0.61)	5.9 (0.21)	10.8 (0.35)
2004 (Method 2)3,4	11.1 (0.23)	36.3 (1.03)	18.6 (0.60)	5.9 (0.21)	10.9 (0.35)
2005 3	11.5 (0.22)	35.6 (0.98)	20.0 (0.61)	6.2 (0.20)	11.3 (0.36)
2006 3,5	12.4 (0.26)	35.6 (1.25)	20.3 (0.68)	6.5 (0.25)	12.3 (0.48)
2007 6	12.3 (0.31)	37.0 (1.41)	21.7 (0.85)	6.5 (0.27)	13.4 (0.61)
2008 3	13.4 (0.33)	40.4 (1.34)	23.1 (0.80)	7.0 (0.28)	14.1 (0.77)
2009 3	14.4 (0.31)	40.3 (1.21)	24.5 (0.75)	7.6 (0.26)	15.5 (0.69)
20103	15.0 (0.30)	38.8 (0.97)	23.7 (0.55)	8.1 (0.27)	15.6 (0.63)
20113,7 (Jan.-Mar.)	15.9 (0.49)	39.6 (1.71)	25.4 (1.20)	8.2 (0.39)	17.2 (1.24)

¹Based on family income and family size, using the U.S. Census Bureau’s poverty thresholds. “Poor” persons are defined as those below the poverty threshold; “near poor” persons have incomes of 100% to less than 200% of the poverty threshold; and “not poor” persons have incomes of 200% of the poverty threshold or greater. The percentage of respondents with unknown poverty status was 19.1% in 1997, 23.6% in 1998, 26.4% in 1999, 27.0% in 2000, 27.1% in 2001, 28.1% in 2002, 31.5% in 2003, 29.6% in 2004, 28.9% in 2005, 30.7% in 2006, 18.0% in 2007, 15.8% in 2008, 12.3% in 2009, 12.2% in 2010, and 11.6% in the first quarter of 2011. For more information on the unknown income and poverty status categories, see the National Health Interview Survey (NHIS) Survey Description Document for years 1997–2005, available from the NHIS website. Estimates may differ from estimates based on both reported and imputed income. See “Technical Notes ” for a discussion of the use of imputed income in the stratification of health insurance coverage by poverty status.

²The category “public health plan coverage” includes Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plans, Medicare (disability), and military plans. A small number of persons were covered by both public and private plans and were included in both categories. See Table 6 for persons covered by private plans.

³Beginning in the third quarter of 2004, two additional questions were added to the NHIS insurance section to reduce potential errors in reporting Medicare and Medicaid status. Persons aged 65 and over not reporting Medicare coverage were asked explicitly about Medicare coverage, and persons under age 65 with no reported coverage were asked explicitly about Medicaid coverage. Estimates of uninsurance for 2004 were calculated both without the additional information from these questions (noted as Method 1) and with the responses to these questions (noted as Method 2). Respondents who were reclassified as “covered” by the additional questions received the appropriate follow-up questions concerning periods of noncoverage for insured respondents. Beginning in 2005, all estimates were calculated using Method 2. See “Technical Notes ” for additional information.

⁴ In 2004, a much larger than expected proportion of respondents reported a family income of “$2.” Based on extensive review, these “$2” responses were coded to “not ascertained” for the final 2004 NHIS data files. Effective with the March 2006 Early Release report, the 2004 estimates were recalculated to reflect this editing decision. For a complete discussion, see the NHIS Survey Description Document for 2004, available from the NHIS website. The problem with the “$2” income reports was fixed in the 2005 NHIS.

⁵In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

⁶In 2007, the income section of NHIS was redesigned, and estimates by poverty status may not be directly comparable with earlier years. See “Technical Notes ” for further information on the income question changes.

⁷In 2011, several new unfolding bracket income questions were added to the income section of NHIS. See “Technical Notes” for further information on the income question changes.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 6

Table 6a. Percentage of persons under age 65 with private health insurance coverage at the time of interview, by poverty status: United States, 1997–March 2011

Under 65 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with private health insurance coverage2 (standard error)
1997	70.8 (0.35)	22.9 (0.93)	53.5 (0.80)	87.6 (0.27)	66.7 (0.71)
1998	72.0 (0.36)	23.1 (1.02)	53.0 (0.92)	88.1 (0.29)	67.1 (0.71)
1999	73.1 (0.36)	26.1 (1.12)	50.9 (0.86)	88.9 (0.24)	68.0 (0.65)
2000	71.8 (0.34)	25.2 (1.00)	49.1 (0.87)	87.4 (0.28)	68.8 (0.63)
2001	71.6 (0.37)	25.5 (1.13)	48.4 (0.85)	87.2 (0.27)	67.8 (0.69)
2002	69.8 (0.39)	26.0 (1.14)	46.5 (0.89)	86.0 (0.33)	63.9 (0.71)
2003	68.2 (0.40)	23.4 (1.21)	42.3 (0.90)	85.8 (0.34)	64.1 (0.68)
2004 3	68.6 (0.39)	20.0 (1.11)	44.9 (0.85)	85.0 (0.32)	66.3 (0.70)
2005	68.4 (0.39)	22.1 (0.89)	43.2 (0.89)	84.7 (0.30)	66.2 (0.68)
2006 4	66.5 (0.48)	20.6 (1.29)	40.6 (0.91)	84.1 (0.41)	65.7 (0.79)
2007 5	66.8 (0.53)	20.1 (1.41)	37.9 (1.00)	83.8 (0.40)	61.7 (1.04)
2008 3	65.4 (0.58)	17.9 (1.21)	36.3 (1.00)	82.5 (0.38)	60.7 (1.16)
2009 3	62.9 (0.54)	14.1 (0.87)	35.9 (0.93)	81.6 (0.42)	57.9 (1.24)
20103	61.2 (0.50)	15.5 (0.70)	33.2 (0.77)	81.0 (0.36)	57.3 (1.08)
20113,6 (Jan.-Mar.)	61.3 (0.89)	17.7 (1.55)	34.5 (1.53)	82.0 (0.64)	53.6 (2.13)

See footnotes at end of Table 6c.

Table 6b. Percentage of persons aged 0–17 with private health insurance coverage at the time of interview, by poverty status: United States, 1997–March 2011

0-17 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with private health insurance coverage2 (standard error)
1997	66.2 (0.57)	17.5 (1.09)	55.0 (1.15)	88.9 (0.43)	61.7 (1.18)
1998	68.5 (0.55)	19.3 (1.17)	56.3 (1.22)	89.9 (0.48)	62.1 (1.13)
1999	69.1 (0.55)	20.2 (1.16)	52.1 (1.23)	90.6 (0.39)	63.8 (1.02)
2000	67.1 (0.53)	19.5 (1.21)	48.8 (1.23)	88.4 (0.47)	64.2 (0.99)
2001	66.7 (0.57)	18.1 (1.12)	48.4 (1.23)	88.4 (0.40)	62.2 (1.16)
2002	63.9 (0.61)	17.2 (1.08)	44.9 (1.29)	86.9 (0.54)	56.3 (1.19)
2003	62.6 (0.60)	14.4 (1.06)	39.9 (1.28)	86.5 (0.56)	58.8 (1.07)
2004 3	63.1 (0.59)	12.6 (0.97)	43.0 (1.29)	86.4 (0.52)	60.0 (1.11)
2005	62.4 (0.60)	15.0 (1.10)	40.0 (1.31)	85.6 (0.52)	59.3 (1.16)
2006 4	59.7 (0.72)	13.1 (1.10)	36.9 (1.37)	85.9 (0.63)	57.8 (1.28)
2007 5	59.9 (0.82)	11.9 (1.08)	34.0 (1.46)	85.1 (0.63)	54.8 (1.82)
2008 3	58.3 (0.84)	10.4 (0.95)	32.9 (1.46)	83.1 (0.67)	54.8 (1.78)
2009 3	55.7 (0.86)	8.2 (0.81)	32.8 (1.43)	82.4 (0.73)	55.3 (2.07)
20103	53.8 (0.75)	9.2 (0.70)	30.5 (1.18)	81.4 (0.61)	53.7 (1.74)
20113,6 (Jan.-Mar.)	54.4 (1.40)	11.2 (1.84)	31.4 (2.39)	84.7 (1.04)	45.3 (3.33)

See footnotes at end of Table 6c.

Table 6c. Percentage of persons aged 18–64 with private health insurance coverage at the time of interview, by poverty status: United States, 1997–March 2011

18-64 years	Poverty status1
	Total	Poor	Near poor	Not poor	Unknown
	Percent of persons with private health insurance coverage2 (standard error)
1997	72.8 (0.30)	26.8 (1.09)	52.6 (0.76)	87.1 (0.26)	68.6 (0.65)
1998	73.5 (0.32)	25.8 (1.17)	50.9 (0.90)	87.4 (0.27)	69.1 (0.66)
1999	74.7 (0.33)	30.4 (1.39)	50.2 (0.85)	88.2 (0.24)	69.7 (0.60)
2000	73.8 (0.32)	29.2 (1.16)	49.3 (0.83)	87.1 (0.27)	70.6 (0.61)
2001	73.7 (0.33)	31.7 (1.41)	48.4 (0.82)	86.8 (0.28)	69.9 (0.61)
2002	72.3 (0.35)	31.8 (1.50)	47.5 (0.85)	85.7 (0.30)	66.9 (0.62)
2003	70.6 (0.36)	29.0 (1.60)	43.7 (0.88)	85.5 (0.33)	66.0 (0.62)
2004 3	70.9 (0.36)	24.9 (1.39)	46.0 (0.79)	84.6 (0.31)	68.6 (0.65)
2005	70.9 (0.36)	26.8 (1.03)	45.0 (0.85)	84.4 (0.29)	68.7 (0.61)
2006 4	69.2 (0.43)	25.5 (1.72)	42.6 (0.92)	83.6 (0.40)	68.6 (0.71)
2007 5	69.6 (0.47)	25.4 (1.92)	40.4 (1.01)	83.4 (0.38)	64.0 (0.92)
2008 3	68.1 (0.54)	22.7 (1.65)	38.3 (1.01)	82.4 (0.37)	62.7 (1.13)
2009 3	65.8 (0.47)	18.0 (1.15)	37.7 (0.84)	81.4 (0.38)	58.8 (1.13)
20103	64.1 (0.46)	19.6 (0.89)	34.7 (0.74)	80.8 (0.36)	58.4 (1.11)
20113,6 (Jan.-Mar.)	64.0 (0.78)	21.6 (1.80)	36.1 (1.37)	81.2 (0.63)	57.3 (1.88)

¹Based on family income and family size, using the U.S. Census Bureau’s poverty thresholds. “Poor” persons are defined as those below the poverty threshold; “near poor” persons have incomes of 100% to less than 200% of the poverty threshold; and “not poor” persons have incomes of 200% of the poverty threshold or greater. The percentage of respondents with unknown poverty status was 19.1% in 1997, 23.6% in 1998, 26.4% in 1999, 27.0% in 2000, 27.1% in 2001, 28.1% in 2002, 31.5% in 2003, 29.6% in 2004, 28.9% in 2005, 30.7% in 2006, 18.0% in 2007, 15.8% in 2008, 12.3% in 2009, 12.2% in 2010, and 11.6% in the first quarter of 2011. For more information on the unknown income and poverty status categories, see the National Health Interview Survey (NHIS) Survey Description Document for years 1997–2005, available from the NHIS website. Estimates may differ from estimates based on both reported and imputed income. See “Technical Notes ” for a discussion of the use of imputed income in the stratification of health insurance coverage by poverty status.

²The category “private health insurance” excludes plans that paid for only one type of service, such as accidents or dental care. A small number of persons were covered by both public and private plans and thus were included in both categories. See Table 5 for persons covered by public plans.

³In 2004, a much larger than expected proportion of respondents reported a family income of “$2.” Based on extensive review, these “$2” responses were coded to “not ascertained” for the final 2004 NHIS data files. Effective with the March 2006 Early Release report the 2004 estimates were recalculated to reflect this editing decision. For a complete discussion, see the NHIS Survey Description Document for 2004, available from the NHIS website. The problem with the “$2” income reports was fixed in the 2005 NHIS.

⁴In 2006, NHIS underwent a sample redesign. The impact of the new sample design on estimates presented in this report is minimal.

⁵In 2007, the income section of NHIS was redesigned, and estimates by poverty status may not be directly comparable with earlier years. See “Technical Notes ” for further information on the income question changes.

⁶In 2011, several new unfolding bracket income questions were added to the income section of NHIS. See “Technical Notes” for further information on the income question changes.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 1997–2011, Family Core component.

Table 7

Table 7a. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by age: United States, January–March 2011

Age	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
All ages	15.3 (0.44)	19.8 (0.49)	11.2 (0.38)
Under 65 years	17.4 (0.49)	22.5 (0.54)	12.8 (0.42)
0–17 years	6.9 (0.50)	11.5 (0.65)	3.5 (0.33)
18–64 years	21.5 (0.59)	26.8 (0.63)	16.4 (0.53)
18–24 years	28.0 (1.23)	37.0 (1.31)	20.3 (1.08)
25–34 years	27.2 (1.15)	34.9 (1.15)	21.0 (1.01)
35–44 years	21.7 (0.99)	26.8 (1.05)	16.2 (0.83)
45–64 years	16.1 (0.62)	19.0 (0.66)	12.8 (0.58)
65 years and over	0.9 (0.19)	1.8 (0.27)	0.8 (0.16)
0–18 years	7.2 (0.50)	12.0 (0.64)	3.7 (0.34)
19–25 years	30.4 (1.33)	40.3 (1.43)	22.7 (1.13)

See footnotes at end of Table 7h.

Table 7b. Percentage of males who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, January–March 2011

Male	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
All ages	17.1 (0.53)	21.6 (0.56)	13.1 (0.47)
Under 65 years	19.2 (0.58)	24.1 (0.61)	14.8 (0.52)
0–17 years	7.5 (0.65)	11.9 (0.77)	3.7 (0.43)
18–64 years	24.0 (0.72)	29.1 (0.75)	19.3 (0.66)
18–24 years	29.2 (1.59)	37.6 (1.87)	23.3 (1.45)
25–34 years	31.4 (1.51)	38.8 (1.45)	25.8 (1.33)
35–44 years	24.4 (1.28)	28.7 (1.32)	18.9 (1.17)
45–64 years	17.8 (0.85)	20.8 (0.89)	14.5 (0.79)
65 years and over	1.0 (0.30)	1.8 (0.36)	0.8 (0.25)
0–18 years	7.9 (0.63)	12.5 (0.76)	3.9 (0.42)
19–25 years	33.3 (1.77)	42.3 (1.94)	27.6 (1.57)

See footnotes at end of Table 7h.

Table 7c. Percentage of females who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year: United States, January–March 2011

Female	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
All ages	13.5 (0.44)	18.2 (0.51)	9.4 (0.37)
Under 65 years	15.6 (0.50)	20.9 (0.58)	10.8 (0.43)
0–17 years	6.2 (0.58)	11.1 (0.76)	3.4 (0.42)
18–64 years	19.1 (0.59)	24.6 (0.65)	13.7 (0.52)
18–24 years	26.8 (1.50)	36.3 (1.58)	17.1 (1.38)
25–34 years	23.0 (1.24)	30.9 (1.35)	16.2 (1.07)
35–44 years	19.1 (1.07)	25.0 (1.15)	13.5 (0.92)
45–64 years	14.5 (0.67)	17.2 (0.74)	11.3 (0.62)
65 years and over	0.8 (0.20)	1.7 (0.32)	0.7 (0.19)
0–18 years	6.6 (0.58)	11.5 (0.75)	3.6 (0.43)
19–25 years	27.5 (1.51)	38.4 (1.66)	17.8 (1.38)

See footnotes at end of Table 7h.

Table 7d. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by race/ethnicity: United States, January–March 2011

Race/ethnicity	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
Hispanic or Latino	29.4 (1.07)	34.9 (1.12)	23.9 (0.98)
Non-Hispanic White, single race	11.2 (0.49)	15.6 (0.58)	8.0 (0.41)
Non-Hispanic Black, single race	16.6 (0.94)	21.5 (1.01)	11.4 (0.72)
Non-Hispanic Asian, single race	14.9 (1.45)	18.9 (1.63)	11.5 (1.34)
Non-Hispanic Other races and multiple races	20.4 (2.29)	24.3 (2.37)	10.6 (1.62)

See footnotes at end of Table 7h.

Table 7e. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by region: United States, January–March 2011

Region	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
Northeast	11.8 (1.05)	15.5 (1.12)	8.3 (0.53)
Midwest	11.4 (0.86)	16.4 (1.04)	7.5 (0.72)
South	17.1 (0.81)	21.7 (0.87)	13.3 (0.76)
West	18.6 (0.83)	23.3 (0.92)	13.6 (0.65)

See footnotes at end of Table 7h.

Table 7f. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by education: United States, January–March 2011

Education3	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
Less than high school	30.8 (1.41)	35.0 (1.36)	26.1 (1.31)
High school diploma or GED4	22.7 (0.73)	27.4 (0.80)	17.8 (0.69)
More than high school	12.1 (0.51)	16.8 (0.58)	8.6 (0.41)

See footnotes at end of Table 7h.

Table 7g. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by employment status: United States, January–March 2011

Employment status5	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
Employed	18.5 (0.59)	23.7 (0.65)	14.3 (0.53)
Unemployed	48.9 (1.98)	55.1 (1.86)	35.6 (1.69)
Not in workforce	21.3 (0.97)	26.8 (1.07)	16.8 (0.90)

See footnotes at end of Table 7h.

Table 7h. Percentage of persons who lacked health insurance coverage at the time of interview, for at least part of the past year, or for more than a year, by marital status: United States, January–March 2011

Marital status3	Uninsured1 at the time of interview	Uninsured1 for at least part of the past year2	Uninsured1 for more than a year2
	Percent (standard error)
Married	12.8 (0.60)	16.3 (0.64)	10.1 (0.52)
Widowed	5.1 (0.75)	6.9 (0.92)	4.1 (0.63)
Divorced or separated	21.3 (1.05)	26.0 (1.12)	15.6 (0.95)
Living with partner	33.7 (1.55)	40.7 (1.66)	25.0 (1.52)
Never married	27.4 (0.91)	34.2 (0.94)	20.9 (0.82)

¹A person was defined as uninsured if he or she did not have any private health insurance, Medicare, Medicaid, Children’s Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, or military plan. A person was also defined as uninsured if he or she had only Indian Health Service coverage or had only a private plan that paid for one type of service, such as accidents or dental care.

²A year is defined as the 12 months prior to interview.

³Shown only for persons aged 18 and over.

⁴GED is General Educational Development high school equivalency diploma.

⁵Shown only for persons aged 18–64.

NOTES: The estimates for 2011 are based on data collected from January through March. Data are based on household interviews of a sample of the civilian noninstitutionalized population.

DATA SOURCE: CDC/NCHS, National Health Interview Survey, 2011, Family Core component.