Table 4.

Childhood predictors of adolescent substance use severity as assessed using linear regression

Cigarette Use	b	β	t	p	r2
SES	−.02	−.11	−1.22	.23
Age at follow-up*	.51	.35	3.90	<.01	.19+
Delinquency*	.09	.33	2.40	.02
Aggression	.02	.11	.74	.46
Attention Problems	−.04	−.16	−1.35	.18	.31++
Alcohol Use	b	β	t	p	r2
SES	.02	.14	1.37	.17
Age at follow-up*	.61	.33	3.28	<.01	.13+
Delinquency	.04	.12	.75	.46
Aggression	.04	.07	.45	.66
Attention Problems	−.06	−.18	−1.44	.15	.16++
Marijuana Use	b	β	t	p	r2
SES	−.03	−.19	−1.94	.06
Age at follow-up	.24	.14	1.44	.15	.10+
Delinquency*	.13	.41	2.84	<.01
Aggression	.01	.06	.38	.71
Attention Problems*	−.09	−.30	−2.45	.02	.24++

Note:

^*= p ≤ .05;

⁺ = variance that can be attributed to SES and Age at follow-up;

⁺⁺= total variance accounted for by control and predictor variables.