Table I.

Correlations, Mean (SD) Among All Study Variables

	Time 1					Time 2
	Cigarette use1	Marijuana use1	Sex partners	Popularity	Aggression	Cigarette use1	Marijuana use1	Sex partners
Time 1
Cigarette use		.37**	.20**	.28**	.39**	.60**	.15*	.17*
Marijuana use			.36**	.17*	.25**	.33**	.46**	.21**
Sex partners				.20**	.26**	.20**	.25**	.49**
Popularity					.42**	.18*	.20**	.23**
Aggression						.32**	.18*	.24**
Time 2
Cigarette use							.33**	.39**
Marijuana use								.34**
Mean (SD)	1.22 (.83)	1.22 (.64)	1.53 (.96)	−.02 (1.00)	−.04 (.71)	1.46 (1.18)	1.52 (.97)	1.85 (1.04)

¹Means (SD) of untransformed variables. *p < .01; **p < .001.