2014 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, 2014
Characteristics	Weighted No. of Visits	SE (Weighted No.)	Rate^*	SE^*(Rate)
Total	1,955,609	81,223	61.3	2.55
Child (Aged 0–17 years)^†	708,555	44,622	96.3	6.06
Adult (Aged 18+ years)^§	1,246,877	49,696	50.8	2.03
Sex^¶
Male	892,904	39,142	56.9	2.49
Boys (Age <18 years)	433,082	27,001	115.2	7.18
Men (Age 18+ years)	459,698	20,895	38.5	1.75
Female	1,062,671	43,408	65.6	2.68
Girls (Age <18 years)	275,453	17,772	76.5	4.92
Women (Age 18+ years)	787,164	30,898	62.5	2.45
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	256,432	19,312	129.0	9.72
5–17 years	452,124	25,830	84.2	4.81
18–34 years	443,891	17,142	59.2	2.29
35–64 years	643,514	28,759	51.9	2.32
65+ years	159,472	5,835	34.5	1.26
U.S. Census Region^††
Northeast	456,974	58,268	81.4	10.38
Midwest	400,363	29,193	59.1	4.31
South	740,812	43,396	61.9	3.62
West	357,461	21,598	47.5	2.87
MSA Status^§§
MSA^¶¶	1,697,202	79,588	62.6	2.94
Non-MSA^***	247,944	9,629	53.6	2.08

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, 2014
Characteristics	Weighted No. of Visits	Standard Error of Weighted No. of Visits	Rate^* (SE)
Total	2,024,408	256,718	64.5 (8.2)
Child (aged 0–17 years)^†	936,326	153,733	127.5 (20.9)
Adult (aged 18+ years)^§	1,088,082	151,620	45.3 (6.3)
Sex
Male	1,124,154	166,027	73.4 (10.8)
Female	900,254	128,235	56.1 (8.0)
Race, not considering ethnicity
White	1,173,915	177,221	48.3 (7.3)
Black	808,508	169,230	198.3 (41.5)
Other^¶	—	—	—
Ethnicity
Hispanic or Latino	424,511	110,206	77.6 (20.1)
Not Hispanic or Latino	1,599,897	201,334	61.8 (7.8)
Age Group
0–4 years	262,078	58,929	131.9 (29.7)
5–17 years	674,248	139,678	125.9 (26.1)
18–34 years	468,902	101,363	64.4 (13.9)
35–64 years	516,556	92,096	42.2 (7.5)
65+ years	67,024	18,513	14.9 (4.1)
U.S. Census Region
Northeast	535,724	140,784	96.7 (25.4)
Midwest	584,251	155,325	87.5 (23.3)
South	537,759	83,277	45.8 (7.1)
West^¶	—	—	—
MSA status
MSA	1,769,517	256,141	64.8 (9.4)
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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