Table 1.

Summary Statistics (N=766)

	Mean or %	Std. Dev.	Min	Max
Substance Use
Age 15 (Yes/No)	% Yes
Cigarette	9.93%
Alcohol	24.33%
Marijuana	8.59%
End of High School (Yes/No)	% Yes
Cigarette	26.68%
Alcohol	59.97%
Marijuana	25.07%
Amount at End of High School (Times Per Month)
Cigarette	5.61	13.67	0.00	45.00
Alcohol	4.00	7.21	0.00	45.00
Marijuana	3.94	10.77	0.00	45.00
Predictor Variables
Out-of-School Contexts
Unsupervised Time with Peers	0.00	1.00	−2.11	1.99
Sports	0.00	1.00	−0.94	1.73
Organized Activities	0.00	1.00	−1.33	4.46
Paid Employment	0.00	1.00	−0.96	3.50
Covariates
Female	51.27%
Race/Ethnicity
White	80.86%
Black	8.43%
Hispanic	5.62%
Asian/Other	5.09%
Birth
Maternal Age	29.24	5.34	18.00	46.00
Maternal Education	14.69	2.42	7.00	21.00
Age 15
Income To Needs Ratio	5.40	5.39	0.08	42.92
Parenting Composite (Standardized)	−0.00	0.81	−4.10	1.78
Adolescent Impulsivity	2.38	0.75	1.00	4.71
N	766

Note. Unsupervised Time with Peers is the standardized value of the average of standardized days per week and standardized hours per weekend. Paid Employment is the standardized value of hours per week. Sports and Organized Activities is the standardized value of days per week. Parenting composite is the average of age 15 standardized HOME and Maternal Sensitivity scores