County	Raw County-Level Variables for Study 1
	Location	In CIIS (%)	Children Ages 19–35 Months (n)	Up to Date on Immunizations (%)	African American Race (%)	Hispanic Ethnicity (%)	Average Income ($)	Pediatric Practice—to– Family Medicine Practice Ratio	Community Health Centers (n)
1	Rural	94	366	37	2	44	35,988	1.00	1
2	Rural	85	1,274	39	0	23	67,565	0.08	0
3	Rural	85	614	42	5	12	35,879	0.33	3
4	Rural	93	1,720	39	1	18	63,617	0.33	6
5	Rural	82	242	31	1	6	59,118	0.20	0
6	Rural	80	350	27	3	15	57,179	0.00	3
7	Rural	94	401	49	1	38	29,738	0.20	3
8	Rural	103	234	37	1	39	37,350	0.00	1
9	Urban	93	3,779	51	4	35	52,923	0.15	11
10	Urban	89	11,807	51	10	17	58,302	0.45	6
11	Urban	83	9,453	54	2	7	93,819	0.61	1
12	Urban	70	12,354	29	8	13	54,839	0.26	10
13	Urban	93	10,008	50	2	13	63,857	0.34	3
14	Urban	85	5,343	36	2	10	53,502	0.18	7
15	Urban	82	3,143	38	3	39	39,570	0.27	7
16	Urban	84	6,056	43	1	28	52,457	0.10	8