Table 2.

Linear Growth Curve Models for Recent Substance Use

	Alcohol		Cigarettes		Marijuana		Hard Drugs
	Est.	SE	Est.	SE	Est.	SE	Est.	SE
Initial Use
Intercept	0.574	0.294	0.782***	0.060	0.593	0.221***	0.943***	0.285
Age (Years)	0.042	0.024	0.022	0.014	0.042	0.021	0.004	0.024
SES (Lunch)	−0.005	0.021	0.037	0.024	0.043	0.036	0.019	0.022
Cohort 2	−0.044	0.041	−0.029	0.031	−0.097	0.076	0.045**	0.016
Cohort 3	−0.050	0.009	−0.009	0.022	−0.064	0.071	0.042***	0.012
Linear Growth
Intercept	−0.035	0.112	0.014	0.073	−0.065	0.094	0.049	0.070
Age (Years)	0.006	0.009	−0.002	0.006	0.008	0.008	−0.004	0.006
SES (Lunch)	−0.011	0.013	0.013	0.010	−0.006	0.015	−0.001	0.003
Cohort 2	−0.002	0.009	0.006	0.005	−0.003	0.024	−0.009**	0.003
Cohort 3	−0.025**	0.009	0.020*	0.009	−0.011	0.021	0.000	0.003
N	374		374		374		374

^*p < .05

^**p < .01

^***p < .001