Table 2:

Odds ratios (95% CI) of using tobacco, alcohol, or marijuana in the past 6 months as a function of Risk Group.

	Any drug	# of drugs	Single drug
			Tobacco	Alcohol	Marijuana
No Risk (vs. all other groups)
Lo Imp: 0 BA	Ref	Ref	Ref	Ref	Ref
Lo IMP: 1 BA	1.45 (0.72, 2.93)	1.38 (0.84, 2.26)	1.41 (0.57, 3.48)	1.91 (0.75, 4.84)	1.33 (0.35, 5.05)
Lo IMP: 2 BA	2.53 (1.33, 4.78)*	2.86 (2.09, 3.91)**	2.50 (1.11, 5.62)*	3.12 (1.32, 7.37)*	3.19 (1.04, 9.77)*
Lo IMP: 3+ BA	3.20 (1.82, 5.62)**	3.34 (2.50, 4.44)**	3.36 (1.64, 6.85)*	4.13 (1.91, 8.92)**	3.46 (1.25, 9.58)*
Hi IMP: 0 BA	2.77 (1.50, 5.13)*	2.59 (1.85, 3.63)**	3.72 (1.77, 7.84)*	3.26 (1.41, 7.54)*	3.78 (1.28, 11.13)*
Hi IMP: 1 BA	5.17 (2.85, 9.39)**	4.13 (2.51, 6.81)**	4.93 (2.34, 10.4)**	5.81 (2.60, 12.95)**	6.60 (2.35, 18.51)**
Hi IMP: 2 BA	5.61 (3.15, 10.02)**	4.46 (2.85, 6.99)**	7.34 (3.62, 14.89)**	6.10 (2.78, 13.38)**	2.97 (0.97, 9.07)
Hi IMP: 3+ BA	8.52 (5.04, 14.41)**	8.07 (5.59, 11.65)**	9.89 (5.13, 19.04)**	9.40 (4.57, 19.34)**	10.13 (3.95, 25.95)**
Single Risk-BA (vs. single risk-impulsivity and combined risk)
Lo IMP: 3+ BA	Ref	Ref	Ref	Ref	Ref
Hi IMP: 0 BA	0.87 (0.52, 1.44)	0.78 (0.63, 0.95)*	1.11 (0.62, 1.98)	0.79 (0.42, 1.49)	1.09 (0.49, 2.43)
Hi IMP: 3+ BA	2.67 (1.80, 3.95)**	2.42 (1.86, 3.15)**	2.95 (1.88, 4.63)**	2.27 (1.42, 3.63)*	2.93 (1.63, 5.28)**
Single Risk-impulsivity (vs. combined risk)
Hi IMP: 0 BA	Ref	Ref	Ref	Ref	Ref
Hi IMP: 3+ BA	3.07 (1.94, 4.88)**	3.12 (2.57, 3.79)**	2.66 (1.61, 4.39)**	2.89 (1.62, 5.14)**	2.68 (1.35, 5.35)*

Note: Lo IMP = low impulsivity; Hi IMP = high impulsivity; BA = behavioral addictions.

No Risk group = Lo Imp: 0 BA; Single Risk–BA group = Lo IMP: 3+ BA; Single Risk–impulsivity group = Hi IMP: 0 BA; Combined Risk group = Hi IMP: 3+ BA.

Groups sizes = Lo IMP: 0 BA (N = 268); Lo IMP: 1 BA (N = 165); Lo IMP: 2 BA (N = 156); Lo IMP: 3+ BA (N = 240); Hi IMP: 0 BA (N = 176); Hi IMP: 1 BA (N = 143);

Hi IMP: 2 BA (N = 164); Hi IMP: 3+ BA (N = 300).

^*p < 0.05.

^**p < 0.001.