2013 Healthcare Use Data

Emergency Department Visits

**Table A:** Number and rate of emergency department (ED) visits with asthma as the first-listed diagnosis per 10,000 population, by selected patient characteristics: United States, 2013
Characteristics	Weighted No. of Visits	SE (Weighted No.)	Rate^*	SE^*(Rate)
Total	1,977,652	76,794	62.6	2.43
Child (Aged 0–17 years)^†	703,403	46,549	95.6	6.33
Adult (Aged 18+ years)^§	1,273,982	48,307	52.5	1.99
Sex^¶
Male	906,249	40,120	58.2	2.58
Boys (Age <18 years)	433,732	28,593	115.3	7.60
Men (Age 18+ years)	472,343	23,066	40.0	1.95
Female	1,071,386	38,000	66.8	2.37
Girls (Age <18 years)	269,668	18,055	75.0	5.02
Women (Age 18+ years)	801,626	26,983	64.4	2.17
Race, not considering ethnicity
White	—^**	—^**	—^**	—^**
Children (Age <18 years)	—^**	—^**	—^**	—^**
Adults (Age 18+ years)	—^**	—^**	—^**	—^**
Black	—^**	—^**	—^**	—^**
Children (Age <18 years)	—^**	—^**	—^**	—^**
Adults (Age 18+ years)	—^**	—^**	—^**	—^**
Other^**	—^**	—^**	—^**	—^**
Children (Age <18 years)	—^**	—^**	—^**	—^**
Adults (Age 18+ years)	—^**	—^**	—^**	—^**
Ethnicity
Hispanic	—^**	—^**	—^**	—^**
Children (Age <18 years)	—^**	—^**	—^**	—^**
Adults (Age 18+ years)	—^**	—^**	—^**	—^**
Non-Hispanic	—^**	—^**	—^**	—^**
Children (Age <18 years)	—^**	—^**	—^**	—^**
Adults (Age 18+ years)	—^**	—^**	—^**	—^**
Age Group
0–4 years	264,913	21,356	133.3	10.75
5–17 years	438,490	25,576	81.6	4.76
18–34 years	454,955	16,399	61.2	2.21
35–64 years	654,178	29,569	53.0	2.39
65+ years	164,849	5,219	36.9	1.17
U.S. Census Region^††
Northeast	497,866	54,388	89.0	9.72
Midwest	419,712	37,111	62.1	5.49
South	709,302	32,718	59.9	2.76
West	350,771	22,170	47.2	2.99
MSA Status^§§
MSA^¶¶	1,701,835	75,174	64.5	2.85
Non-MSA^***	265,011	9,757	51.8	1.91

Abbreviations: MSA, Metropolitan Statistical Area; SE, standard error.
^*Crude rate per 10,000 and SE, standard error.
^†Rate of child ED visits was calculated using the weighted number of visits for children aged 0–17 years and dividing it by the resident population for children aged 0–17 years per 10,000.
^§Rate of adult ED visits calculated using the weighted number of visits for adults aged 18+ years divided by the resident population for adults aged 18+ years per 10,000.
^¶Sex of patient categories include male and female as in the medical record.
^**Data on race and ethnicity was not available in the database.
^††Based on actual location of the hospital.
^§§Based on location of patient’s residence.
^¶¶Rate of MSA ED visits was calculated by combining the weighted number of visits for large central metro, large fringe metro (suburbs), and medium and small metro categories and dividing it by the resident population for MSA per 10,000.
^***Rate of Non-MSA ED visits was calculated using the weighted number of visits for the micropolitan and noncore (rural) category and dividing it by the resident population for non-MSA per 10,000.

SOURCE: HCUP, Healthcare Cost and Utilization Project, National (Nationwide) Emergency Department Sample (NEDS). Agency for Healthcare Research and Quality, Rockville, MD. For more information about HCUP data see https://www.hcup-us.ahrq.gov/db/nation/neds/nedsdbdocumentation.jsp.

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**Table A:** Emergency department visits (ED) with asthma as the primary diagnosis per 10,000 population, by selected patient characteristics: United States, 2013
Characteristics	Weighted No. of Visits	Standard Error of Weighted No. of Visits	Rate^* (SE)
Total	1,631,391	168,953	52.5 (5.4)
Child (aged 0–17 years)^†	630,474	120,203	85.8 (16.4)
Adult (aged 18+ years)^§	1,000,917	115,035	42.1 (4.8)
Sex
Male	779,988	118,787	51.3 (7.8)
Female	851,403	114,250	53.5 (7.2)
Race, not considering ethnicity
White	941,532	134,318	38.9 (5.6)
Black	603,005	83,069	149.8 (20.6)
Other^¶	—	—	—
Ethnicity
Hispanic or Latino	304,009	59,285	56.9 (11.1)
Not Hispanic or Latino	1,327,382	134,110	51.5 (5.2)
Age Group
0–4 years	252,615	72,853	127.2 (36.7)
5–17 years	377,859	68,853	70.5 (12.9)
18–34 years	351,059	61,551	48.6 (8.5)
35–64 years	515,612	74,849	42.3 (6.1)
65+ years	93,541	26,427	21.5 (6.1)
U.S. Census Region
Northeast	387,672	63,608	70.2 (11.5)
Midwest	300,320	75,268	45.1 (11.3)
South	587,348	96,143	50.6 (8.3)
West	356,051	97,931	48.7 (13.4)
MSA status
MSA	1,424,648	176,817	53.1 (6.6)
Non-MSA^¶	—	—	—

Abbreviations: MSA, Metropolitan Statistical Area; SE, standard error.

^*Crude rate per 10,000 population and SE, standard error.

^†Rate of child emergency department visits was calculated using the weighted number of visits for children aged 0-17 years and dividing it by the civilian non-institutionalized population for children aged 0-17 years per 10,000.

^§Rate of adult emergency department visits was calculated using the weighted number of visits for adults aged 18+ years divided by the civilian non-institutionalized population for adults aged 18+ years per 10,000.

^¶Estimate is suppressed because relative standard error (RSE) of the estimate is >30%. ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NHAMCS

Source: CDC/NCHS. National Hospital Ambulatory Medical Care Survey (NHAMCS). https://www.cdc.gov/nchs/ahcd/about_ahcd.htm

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