Number of ED Visits Due to Asthma (N) and Age-Adjusted Rate (per 10,000 Residents), California Counties, Adults Age 18+, 2008

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COUNTY	N	Rate
Tehama	292	63.6
Merced	1,105	61.7
Humboldt	642	61.6
Tuolumne	262	61.5
Shasta	821	60.9
Mendocino	398	58.1
Imperial	751	56.6
San Joaquin	2,628	56.4
Lake	266	56.0
Contra Costa	4,367	55.6
Nevada	344	53.6
Modoc	40	53.0
Sacramento	5,341	51.6
Yuba	268	51.2
Alameda	5,832	49.9
Butte	836	49.2
Calaveras	152	49.2
Del Norte	115	49.0
Kings	542	48.3
Solano	1,533	48.1
Plumas	83	48.0
Inyo	63	46.7
Madera	510	46.4
Fresno	3,074	46.2
Trinity	48	45.6
San Bernardino	6,727	44.9
Stanislaus	1,545	42.4
Amador	123	41.6
San Benito	173	40.6
Tulare	1,203	40.2
CALIFORNIA OVERALL	102,544	36.4
Sonoma	1,303	35.9
Monterey	1,087	35.8
Los Angeles	27,016	35.7
Mariposa	56	35.2
Sutter	237	35.1
Kern	2,026	35.0
Siskiyou	123	35.0
San Francisco	2,175	34.2
Colusa	53	33.8
San Luis Obispo	691	33.7
Napa	344	33.1
Riverside	4,963	32.5
Glenn	71	31.3
San Mateo	1,749	31.1
El Dorado	419	31.1
Lassen	84	28.6
Yolo	402	27.9
Ventura	1,687	27.5
Santa Cruz	562	27.5
San Diego	6,270	27.0
Santa Clara	3,425	25.7
Placer	621	25.6
Marin	479	24.5
Orange	5,267	22.6
Santa Barbara	585	18.1
Mono	15	--
Sierra	5	--
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.