. Author manuscript; available in PMC: 2013 Jul 1.

Published in final edited form as: Addict Behav. 2012 Mar 13;37(7):875–879. doi: 10.1016/j.addbeh.2012.03.007

Table 2.

Predictive Incremental Validity.

Model	R²	R²_adj	Δ R²	ANOVA	df	P =
Alcohol Use, 3 Months after Incarceration^a
1) Age, Race, Friend	.275	.251	.275	F = 11.73	5, 155	<.001
Use, Friend Arrested, Baseline Alcohol Use
2) DAS-General:	.309	.278	.035	F = 9.79	7, 153	< .001
Stealing/Generalized				F_ch = 3.85	2, 153	.023
Delinquency, Predatory Aggression
Alcohol Use, 3 Months after Incarceration^a
1) Age, Race, Friend	.275	.251	.275	F = 11.73	5, 155	< .001
Use, Friend Arrested, Baseline Alcohol Use
2) DAS-Alcohol:	.352	.322	.077	F = 11.86	7, 153	< .001
Stealing/Impulsive				F_ch = 9.11	2, 153	< .001
Delinquency, Predatory Aggression
Marijuana Use, 3 Months after Incarceration^a
1) Age, Race, Friend	.191	.165	.191	F = 7.33	5, 155	< .001
Use, Friend Arrested, Baseline Marijuana Use
2) DAS-General:	.230	.195	.039	F = 6.54	7, 153	< .001
Stealing/Generalized				F_ch = 3.87	2, 153	.023
Delinquency, Predatory Aggression
Marijuana Use, 3 Months after Incarceration^a
1) Age, Race, Friend	.191	.165	.191	F = 7.33	5, 155	< .001
Use, Friend Arrested, Baseline Marijuana Use
2) DAS-Marijuana:	.205	.168	.014	F = 5.63	7, 153	< .001
Stealing/Generalized				F_ch = 1.30	2, 153	.276
Delinquency, Drug
Dealing & Aggressive
Behavior

N = 161, due to availability of substance use data 3 mo. after incarceration; n= 19 were in a controlled environment asain after release.