Number of ED Visits Due to Asthma (N) and Age-Adjusted Rate (per 10,000 Residents), California Counties, Adults Age 18+, 2010

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COUNTY	N	Rate
Tehama	279	59.8
Merced	1,152	61.5
Humboldt	620	58.7
Tuolumne	164	36.6
Shasta	724	54.0
Mendocino	450	67.5
Imperial	748	53.2
San Joaquin	2,612	53.0
Lake	284	64.8
Contra Costa	4,993	62.2
Nevada	333	48.9
Modoc	27	33.1
Sacramento	6,127	57.5
Yuba	222	39.9
Alameda	6,916	57.9
Butte	823	47.7
Calaveras	128	37.9
Del Norte	104	44.2
Kings	631	54.9
Solano	2,214	67.3
Plumas	52	31.4
Inyo	59	39.4
Madera	496	43.2
Fresno	3,484	49.8
Trinity	44	33.0
San Bernardino	6,703	42.3
Stanislaus	1,708	45.2
Amador	138	42.7
San Benito	159	36.6
Tulare	1,306	41.1
CALIFORNIA OVERALL	107,516	36.9
Sonoma	1,553	43.0
Monterey	1,016	32.7
Los Angeles	26,970	34.6
Mariposa	51	33.5
Sutter	218	30.1
Kern	2,301	38.0
Siskiyou	113	35.3
San Francisco	2,497	38.6
Colusa	46	26.7
San Luis Obispo	563	29.0
Napa	437	41.8
Riverside	5,428	33.4
Glenn	83	35.7
San Mateo	1,931	34.1
El Dorado	381	28.6
Lassen	85	28.1
Yolo	494	32.5
Ventura	1,670	26.4
Santa Cruz	492	23.7
San Diego	6,317	26.5
Santa Clara	3,750	27.6
Placer	815	33.2
Marin	536	27.2
Orange	5,178	21.6
Santa Barbara	773	23.5
Mono	18	17.4
Sierra	<12	--
Alpine	<5	--

Data Source: Office of Statewide Health Planning and Development (OSHPD), 2010

*An asthma emergency department (ED) visit is an admission to a licensed ED in California with the primary diagnosis of asthma. The rate of asthma ED visits is the number of ED visits per 10,000 residents, age-adjusted to the 2000 U.S. population. Population denominators for rates are from the California Department of Finance. Rates based on numbers <12 are not reported.