Table 3.

Visits by event year, warning status, and city

Year	Warned	ZIP-code	City	Visits 4-weeks		Rel Risk
				Before	After	RR	LCL	UCL	P-Val
2007	Yes	Warned BAY (0–4 mi)		3995	4463	1.12	1.07	1.17	< 0.0001
		94801	Richmond	1556	1587	1.02	0.95	1.09	0.5701
		94804	Richmond	912	1124	1.23	1.13	1.34	< 0.0001
		94805	Richmond	247	241	0.98	0.82	1.16	0.7850
		94806	San Pablo	1280	1511	1.18	1.10	1.27	< 0.0001
	No	Not warned BAY (4–10 mi)		1510	1690	1.12	1.05	1.20	0.0006
		94530	El Cerrito	302	320	1.06	0.91	1.24	0.4501
		94803	El Sobrante	456	500	1.10	0.97	1.24	0.1299
		94564	Pinole	277	325	1.17	1.00	1.37	0.0314
		94547	Hercules	311	345	1.11	0.95	1.29	0.1554
		94572	Rodeo	164	200	1.22	1.00	1.49	0.0344
		Rest of County (10+ mi)		14127	15700	1.11	1.09	1.14	< 0.0001
2012	Yes	Warned BAY (0–4 mi)		4690	17312	3.69	3.57	3.81	< 0.0001
		94801	Richmond	1261	6102	4.84	4.56	5.14	< 0.0001
		94804	Richmond	1415	4756	3.36	3.17	3.57	< 0.0001
		94805	Richmond	271	764	2.82	2.46	3.23	< 0.0001
		94806	San Pablo	1743	5690	3.26	3.10	3.44	< 0.0001
	No	Not warned BAY (4–10 mi)		1819	2784	1.53	1.44	1.62	< 0.0001
		94530	El Cerrito	310	438	1.41	1.22	1.63	< 0.0001
		94803	El Sobrante	557	994	1.78	1.61	1.98	< 0.0001
		94564	Pinole	374	499	1.33	1.17	1.52	< 0.0001
		94547	Hercules	342	505	1.48	1.29	1.69	< 0.0001
		94572	Rodeo	236	398	1.69	1.44	1.98	< 0.0001
		Rest of County (10+ mi)		17988	18892	1.05	1.03	1.07	< 0.0001