Table 3.

Predictors of patterns of teenage mothers’ smoking and marijuana use across a decade from multinomial logistic regression models

TOBACCO USE		Beta	Wald	Exp(B)	C.I.
Variables distinguishing QUITTERS from persistent tobacco users	White race	−1.26	9.48**	0.28	(0.13–0.63)
	Early cigarette use	−1.35	6.01**	0.26	(0.09–0.76)
	Teen peer use	−0.62	13.13***	0.54	(0.38–0.75)
	Family income	0.00	5.03*	1.00	(1.00–1.00)
	Marijuana user	−1.26	7.19**	0.28	(0.11–0.71)
Variables distinguishing LATE-ONSET users from persistent tobacco users	Teen peer use	−0.48	7.23**	0.62	(0.44–0.87)
			Regression Model χ2 = 87.79***
			Deviance χ2 = 517.84, ns
			Nagelkerke R2 = .30
MARIJUANA USE		Beta	Wald	Exp(B)	C.I.
Variables distinguishing QUITTERS from persistent marijuana users	White race	1.26	4.97*	3.53	(1.17–10.72)
	Depression	−0.08	8.33**	0.93	(0.88–0.98)
	Early marijuana use	−3.10	15.77***	0.05	(0.01–0.21)
	Cigarette user	−1.97	13.96***	0.14	(0.05–0.39)
Variables distinguishing LATE-ONSET users from persistent marijuana users	White race	1.26	5.42*	3.54	(1.22–10.26)
	Depression	−0.10	14.67***	0.91	(0.86–0.95)
			Regression Model χ2 = 105.32***
			Deviance χ2 = 466.25, ns
			Nagelkerke R2 = .36

N.B. , ns = p > .10;

^tp < .10;

^*p < .05;

^**p < .01;

^***p < .001