Attach 11 CHIS Geographic Strata and Selection Probabilities 31AUG2010

Attachment 11:

CHIS Geographic Strata and Selection Probabilities

RDD Sample: Geographic Strata and Selection Probabilities
Stratum ID	Stratum	DOF 2010 HHs Estimate	Prop. Dist. of HHs	Household Selection Probability	Proposed Adult Sample Size	Proposed Adolescent Sample Size
1	Los Angeles	3,286,860	25.7%	0.30%	9,730	603
2	Orange	1,005,502	7.9%	0.30%	2,977	180
3	San Diego	1,103,320	8.6%	0.30%	3,266	208
4	San Bernardino	613,382	4.8%	0.30%	1,816	154
5	Riverside	682,283	5.3%	0.30%	2,020	153
6	Santa Clara	615,202	4.8%	0.30%	1,821	117
7	Alameda	558,230	4.4%	0.30%	1,652	119
8	Sacramento	531,516	4.2%	0.30%	1,573	110
9	Contra Costa	388,353	3.0%	0.30%	1,150	79
10	Fresno	294,547	2.3%	0.30%	872	65
11	Ventura	269,011	2.1%	0.30%	796	66
12	San Francisco	350,758	2.7%	0.30%	1,038	32
13	San Mateo	264,422	2.1%	0.30%	783	58
14	Kern	253,957	2.0%	0.30%	752	62
15	San Joaquin	220,778	1.7%	0.30%	654	40
16	Stanislaus	171,685	1.3%	0.35%	600	58
17	Sonoma	188,593	1.5%	0.32%	600	33
18	Monterey	130,064	1.0%	0.46%	600	40
19	Solano	147,105	1.2%	0.41%	600	45
20	Santa Barbara	149,574	1.2%	0.40%	600	39
21	Tulare	131,915	1.0%	0.45%	600	44
22	Placer	134,740	1.1%	0.45%	600	45
23	Santa Cruz	96,891	0.8%	0.62%	600	43
24	San Luis Obispo	108,034	0.8%	0.56%	600	39
25	Marin	104,407	0.8%	0.57%	600	36
26	Merced	79,542	0.6%	0.75%	600	52
27	Butte	90,405	0.7%	0.66%	600	37
28	Yolo	71,615	0.6%	0.84%	600	51
29	Shasta	71,791	0.6%	0.84%	600	49
30	El Dorado	70,245	0.5%	0.85%	600	54
31	Imperial	50,352	0.4%	1.19%	600	55
32	Kings	40,347	0.3%	1.49%	600	44
33	Madera	44,755	0.3%	1.34%	600	49
34	Napa	50,980	0.4%	1.18%	600	40
35	Humboldt	54,957	0.4%	1.09%	600	43
36	Nevada	42,140	0.3%	1.42%	600	33
37	Mendocino	35,848	0.3%	1.67%	600	38
38	Sutter	32,262	0.3%	1.86%	600	53
39	Yuba	24,594	0.2%	2.44%	600	36
40	Lake	26,264	0.2%	2.28%	600	40
41	San Benito	17,159	0.1%	3.50%	600	60
42	Tehama-Glenn-Colusa	41,848	0.3%	1.19%	500	33
43	Del Norte-Siskiyou-Lassen-Trinity-Modoc-Plumas-Sierra	63,204	0.5%	0.79%	500	32
44	Tuolumne-Calaveras-Amador-Inyo-Mariposa-Mono-Alpine	80,706	0.6%	0.62%	500	19
	Total	12,790,143			48,000	3,286

Attachment 11 – Page 1