Table 3.

Estimates for Predictors of the Time to Family Formation in Three Survival Models of Each Substance Use Behavior at Ages 19/20 after PSW

		Union Formation				Parenthood
		Marriage		Cohabitation
	Age 19/20 substance use behavior	RRR	95% CI	RRR	95% CI	OR	95% CI
Males
Model1	Cigarette	0.87	[0.72, 1.05]	1.13	[0.93, 1.36]	0.92	[0.78, 1.08]
Model2	Binge	0.78**	[0.66, 0.91]	1.29**	[1.11, 1.51]	0.86*	[0.74, 0.99]
	(Binge × Time)	1 11***	[1.06, 1.16]	1.04	[0.99, 1.09]	-	-
Model3	Marijuana	0.78*	[0.62, 0.99]	1.29*	[1.05, 1.59]	0.81*	[0.65, 1.00]
Females
Model1	Cigarette	0.81*	[0.68, 0.96]	1.30**	[1.09, 1.54]	0.92	[0.80, 1.07]
	(Cigarette × Time)	1.08**	[1.03, 1.13]	1.01	[0.95, 1.06]	-	-
Model2	Binge	0.93	[0.80, 1.08]	1.49***	[1.30, 1.72]	0 78***	[0.69, 0.88]
	(Binge × Time)	1.06**	[1.02, 1.11]	1.02	[0.97, 1.06]	-	-
Model3	Marijuana	0.80	[0.63, 1.00]	1.44***	[1.17, 1.75]	0.90	[0.75, 1.08]
	(Marijuana × Time)	1.09**	[1.02, 1.17]	1.00	[0.94, 1.06]	-	-

^*p < .05

^**p < .01

^***p < .001

Notes: Reference group for union formation is neither married nor cohabited. Age 18 substance use variables (cigarette, binge, marijuana, and other illicit drugs) were included in each model as a doubly-robust estimation. PSW: propensity score weighting, OR: Odds Ratio, RRR: Relative Risks Ratio.