Healthcare Use Data 2018

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, 2018
Characteristics	Weighted No. of Visits	SE (Weighted No.)	Rate^*	SE^*(Rate)
Total	1,641,513	76,440	50.2	2.34
Child (Aged 0–17 years)^†	673,801	61,909	91.8	8.43
Adult (Aged 18+ years)^§	967,712	35,312	38.1	1.39
Sex^¶
Male	775,074	41,804	48.1	2.59
Boys (Age <18 years)	411,016	37,729	109.6	10.06
Men (Age 18+ years)	364,058	13,566	29.4	1.10
Female	866,391	35,967	52.2	2.17
Girls (Age <18 years)	262,770	24,247	73.2	6.75
Women (Age 18+ years)	603,622	22,092	46.4	1.70
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	243,138	24,946	122.7	12.59
5–17 years	430,663	37,404	80.4	6.98
18–34 years	401,465	14,319	52.7	1.88
35–64 years	469,134	18,155	37.5	1.45
65+ years	97,113	3,774	18.5	0.72
U.S. Census Region^††
Northeast	358,367	34,460	63.9	6.14
Midwest	344,332	29,700	50.4	4.35
South	665,570	59,528	53.4	4.77
West	273,245	15,164	35.0	1.94
MSA Status^§§
MSA^¶¶	1,445,033	74,859	51.5	2.67
Non-MSA^***	190,704	8,124	41.4	1.76

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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