Number of ED Visits Due to Asthma (N) and Age-Adjusted Rate (per 10,000 Residents), California Counties, All Ages, 2008

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COUNTY	N	Rate
Imperial	1,493	84.4
Merced	1,961	72.9
Tehama	434	72.1
Madera	1,065	69.5
Alameda	9,799	64.7
Tuolumne	334	64.7
Contra Costa	6,630	64.6
Shasta	1,129	64.3
Kings	1,030	63.0
Fresno	6,225	62.9
Humboldt	809	61.3
Mendocino	536	60.6
Lake	351	58.4
San Joaquin	4,019	57.4
Nevada	459	56.8
Calaveras	210	55.8
Solano	2,315	54.4
Inyo	92	54.2
Sacramento	7,634	54.0
San Bernardino	11,379	53.4
Del Norte	154	51.5
Yuba	373	50.1
Plumas	101	48.3
Butte	1,025	47.0
Tulare	2,133	46.8
Stanislaus	2,498	45.9
Trinity	59	45.9
San Benito	275	45.3
Modoc	44	45.3
Colusa	101	44.4
Los Angeles	45,748	44.2
CALIFORNIA OVERALL	167,477	43.8
Mariposa	75	43.2
Monterey	1,883	43.1
Kern	3,556	41.3
Amador	144	40.0
Riverside	8,514	39.8
Sonoma	1,852	38.8
Siskiyou	168	38.1
San Luis Obispo	945	37.4
San Francisco	2,748	37.0
Santa Cruz	934	36.9
San Diego	10,997	35.2
Sutter	343	35.2
San Mateo	2,508	34.8
Lassen	116	34.3
El Dorado	578	34.0
Ventura	2,785	33.7
Napa	464	33.4
Yolo	599	31.3
Glenn	92	29.9
Santa Clara	5,252	29.4
Orange	8,996	28.8
Placer	929	28.8
Marin	666	27.2
Santa Barbara	1,036	24.4
Mono	23	16.5
Sierra	7	--
Alpine	<5	--

Data Source: Office of Statewide Health Planning and Development (OSHPD), 2008

*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 hospitalizations is the number of hospitalizations 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 <20 are not reported.