Table 1.

Sample Characteristics, by Neighborhood Deprivation Quartile^a

	Total		Q1		Q2		Q3		Q4
			[-3.28, -1.96]		[-1.95, -1.08]		[-1.07, 0.35]		[0.36, 6.9]
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Age (in years)	7.34	0.42	7.28	0.43	7.29	0.41	7.40	0.40	7.37	0.43
Cotinine (μg/g)b	0.34	3.49	0.23	2.77	0.33	3.43	0.32	3.21	0.56	4.05
	N	%	n	%	n	%	n	%	n	%
Race/Ethnicity
Black	83	20.70	7	8.43	13	15.66	27	32.53	36	43.37
Hispanic	95	23.69	12	12.63	14	14.74	21	22.11	48	50.53
Asian	49	12.22	16	32.65	14	28.57	12	24.49	7	14.29
White	174	43.39	65	37.36	58	33.33	41	23.56	10	5.75
Family Income
<$50,000	82	20.45	4	4.88	12	14.63	22	26.83	44	53.66
$50,000-$100,000	148	36.91	26	17.57	39	26.35	40	27.03	43	29.05
>$100,000	171	42.64	70	40.94	48	28.07	39	22.81	14	8.19
County
San Francisco	84	20.95	15	17.86	22	26.19	33	39.29	14	16.67
Marin	94	23.44	40	42.55	38	40.43	12	12.77	4	4.26
Alameda	218	54.36	42	19.27	39	17.89	55	25.23	82	37.61
Unknown	5	1.25	---	---	---	---	---	---	---	---
Total	401	100.00	100	24.94	99	24.69	101	25.19	101	25.19

^aQ1=lowest deprivation, Q4=highest deprivation

^bGeometric mean and SD