Table 4.

Multivariate logistic regression models of substance use and parenting practices in Wave 1 predicting DWI and RWI in Wave 2, controlling for selected covariates

Predictor (Wave 1)	DWI in past 30 days (Wave 2) (n = 820)			RWI in past year (Wave 2) (n = 2,177)
	AOR†	[95% CI]	p	AOR‡	[95% CI]	p
Drank alcohol in last 30 days
No	ref.	ref.
Yes	7.71	[4.03, 14.74]	<.001	3.21	[2.29, 4.50]	<.001
Heavy episodic drinking in last 30 days
No	ref.	ref.
Yes	5.79	[2.89, 11.59]	<.001	4.09	[2.87, 5.83]	<.001
Illicit drug use in the last year
No	ref.	ref.
Yes	3.48	[1.62,7.50]	<.01	1.98	[1.38, 2.84]	<.001
Mother’s monitoring knowledge	0.39	[0.22, 0.68]	<.001	0.71	[0.52, 0.98]	<.05
Father’s monitoring knowledge	0.56	[0.39, 0.80]	<.001	1.01	[0.76, 1.33]	.96
Parental control	0.75	[0.60, 0.93]	<.01	1.00	[0.89, 1.13]	.96

Notes: DWI = driving while alcohol/other drug impaired; RWI = riding with alcohol/other drug impaired drivers; AOR = adjusted odds ratio; CI = confidence interval; ref. = reference.

^†Controlled for gender and DWI in Wave 1;

^‡controlled for family structure, race/ethnicity, parental education, and RWI in Wave 1.