Table 1.

Sample characteristics at study entry

	SAAF (n = 173)		Control (n = 99)		P
	M	SD	M	SD
Sex, male	0.43	0.50	0.41	0.50	0.757
Parenting quality	41.93	4.73	41.52	4.81	0.501
Family SES risk	2.42	1.45	2.36	1.48	0.776
Neighborhood SES risk	0.28	2.48	−0.04	3.05	0.366
Externalizing problems	11.23	7.78	11.00	9.11	0.826
Smoking frequency	0.05	0.22	0.06	0.24	0.766

P values are based on independent-groups t tests.