2010 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, 2010
Characteristics	Weighted No. of Visits	SE (Weighted No.)	Rate^*	SE^*(Rate)
Total	1,935,555	76,378	62.6	2.47
Child (Aged 0–17 years)^†	705,619	41,678	95.2	5.62
Adult (Aged 18+ years)^§	1,229,654	43,316	52.3	1.84
Sex^¶
Male	862,299	37,357	56.7	2.46
Boys (Age <18 years)	436,933	25,605	115.3	6.75
Men (Age 18+ years)	425,213	16,407	37.2	1.44
Female	1,073,190	39,760	68.3	2.53
Girls (Age <18 years)	268,660	16,152	74.2	4.46
Women (Age 18+ years)	804,408	27,403	66.5	2.26
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	287,348	19,773	142.3	9.79
5–17 years	418,271	22,373	77.6	4.15
18–34 years	448,532	16,515	62.3	2.29
35–64 years	635,271	23,975	51.8	1.95
65+ years	145,851	4,564	36.0	1.13
U.S. Census Region^††
Northeast	490,254	52,610	88.5	9.50
Midwest	403,645	26,860	60.3	4.01
South	721,070	44,972	62.8	3.92
West	320,586	17,940	44.5	2.49
MSA Status^§§
MSA^¶¶	1,636,070	73,436	63.3	2.84
Non-MSA^***	285,705	12,441	56.5	2.46

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 (ED) visits with asthma as the primary diagnosis per 10,000 population, by selected patient characteristics: United States, 2010
Characteristics	Weighted No. of Visits	Standard Error of Weighted No. of Visits	Rate^* (SE)
Total	1,754,308	158,314	57.8 (5.2)
Child (aged 0–17 years)^†	730,061	111,915	98.2 (15.0)
Adult (aged 18+ years)^§	1,024,247	98,158	44.7 (4.3)
Sex
Male	787,747	96,242	52.9 (6.5)
Female	966,561	89,682	62.5 (5.8)
Race, not considering ethnicity
White	952,210	107,369	39.4 (4.4)
Black	723,960	98,622	187.5 (25.5)
Other	78,138	21,146	33.4 (9.0)
Ethnicity
Hispanic or Latino	277,507	62,853	56.7 (12.8)
Not Hispanic or Latino	1,476,801	139,506	58.0 (5.5)
Age Group
0–4 years	296,573	59,276	139.5 (27.9)
5–17 years	433,488	67,630	81.6 (12.7)
18–34 years	408,159	52,722	57.8 (7.5)
35–64 years	485,024	64,606	40.5 (5.4)
65+ years	122,227	31,870	31.4 (8.2)
U.S. Census Region
Northeast	375,084	46,240	68.7 (8.5)
Midwest	421,711	71,581	64.0 (10.9)
South	669,715	121,790	59.8 (10.9)
West	287,798	54,566	40.5 (7.7)
MSA status
MSA	1,549,322	160,271	60.3 (6.2)
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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