Table 3.

Association between Substance Use and Subsequent Likelihood of Interpersonal Conflict 1 through 4 Hours Later

Variable	1 Hour Later		2 Hours Later		3 Hours Later		4 Hours Later
Within-level	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Alcohol use	2.587***	[1.301, 5.142]	3.328***	[2.047, 5.409]	3.331***	[2.148, 5.165]	3.474***	[2.358, 5.118]
Marijuana use	2.009+	[0.940, 4.296]	2.024*	[1.149, 3.565]	1.699+	[0.987, 2.924]	1.681+	[0.983, 2.873]
Alcohol × marijuana	0.000^	[0.000, 0.000]	0.255	[0.029, 2.240]	0.494	[0.121, 2.019]	0.527	[0.163, 1.709]
Weekend	1.432*	[1.091, 1.879]	1.381*	[1.059, 1.799]	1.350*	[1.035, 1.762]	1.322*	[1.020, 1.714]
Study day	0.974***	[0.966, 0.983]	0.975***	[0.966, 0.983]	0.975***	[0.966, 0.983]	0.975***	[0.967, 0.983]
Between-level	B (S.E.)	95% CI	B (S.E.)	95% CI	B (S.E.)	95% CI	B (S.E.)	95% CI
Delinquency	0.006 (0.015)	[−0.024, 0.036]	0.006 (0.015)	[−0.024, 0.036]	0.006 (0.015)	[−0.024, 0.036]	0.005 (0.015)	[−0.025, 0.035]
Alcohol days	0.069 (0.026)*	[0.018, 0.120]	0.067 (0.026)*	[0.015, 0.118]	0.065 (0.026)*	[0.014, 0.116]	0.064 (0.026)*	[0.013, 0.114]
Marijuana days	0.022 (0.016)	[−0.008, 0.053]	0.022 (0.016)	[−0.009, 0.052]	0.022 (0.016)	[−0.009, 0.053]	0.021 (0.016)	[−0.010, 0.053]
Alcohol + MJ Day	−0.002 (0.038)	[−0.078, 0.073]	−0.006 (0.039)	[−0.081, 0.070]	−0.007 (0.039)	[−0.083, 0.068]	−0.009 (0.039)	[−0.085, 0.067]

Notes: OR = Odds Ratio; B = (un)standardized beta; MJ = Marijuana;

^***p < .001;

^**p < .01;

^*p < .05;

⁺p < .10;

^{^}parameter was fixed to avoid the singularity of the information matrix.