Table 3.

Multinomial Regression Equation Predicting Tobacco and Marijuana Co-Use from Environmental Variables.

	Either Tobacco or Marijuana (Lifetime) Use vs.	OR	p	95% CI
Environmental
Parental Monitoring	No-Use	1.09	0.01	[1.03, 1.15]
	Co-Use	0.90	0.00	[0.85, 0.96]
No friends who use drugs	No Use	0.83	0.52	[0.47, 1.47]
	Co-Use	0.43	0.00	[0.25, 0.74]
No friends who use marijuana	No Use	2.77	0.00	[1.82, 4.24]
	Co-Use	0.30	0.00	[0.17, 0.52]
Never been cyberbullied	No Use	1.83	0.07	[0.94, 3.57]
	Co-Use	0.96	0.91	[0.48, 1.92]

Notes: Psuedo R² = .360, N = 936

Comparison group = Users of either tobacco or marijuana - but not both. Age was used as a covaiate.