Table 4.

Logistic regression models for alcohol, drug and gambling problems.

	Alcohol			Drug use			Gambling

Variable	O.R.	95% C.I. for O.R.	p-value	O.R.	95% C.I. for O.R.	p-value	O.R.	95% C.I for O.R.	p-value
Age	1.17	0.98-1.39	.087	1.08	0.88-1.31	.469	1.03	0.92-1.16	.576
Gender	1.12	0.76-1.65	.577	1.33	0.87-2.03	.191	2.89	2.13-3.92	< .001
Race	1.34	0.73-2.44	.347	0.81	0.45-1.47	.495	0.96	0.67-1.39	.839
Ethnicity	1.99	1.07-3.71	.030	1.47	0.76-2.87	.254	1.40	0.89-2.18	.144
Regular participation in activities	1.03	0.70-1.53	.884	0.74	0.47-1.15	.174	1.00	0.77-1.31	.985

Frequency of substance use/gambling
Infrequent alcohol use¹	1.02	0.57-1.82	.947
Frequent alcohol use¹	3.72	2.17-6.38	< .001
Marijuana use				3.90	2.24-6.79	< .001
Gambling							4.81	3.35-6.90	< .001

Impulsivity	1.14	1.02-1.27	.020	1.18	1.05-1.33	.007	1.14	1.05-1.23	.001
Sensation-seeking	1.01	0.93-1.11	.797	1.04	0.94-1.14	.484	1.04	0.99-1.11	.142

Have a part-time job	0.98	0.64-1.48	.905	1.49	0.94-2.36	.091	0.85	0.63-1.13	.260

Note. Gender: male coded 1, female coded 0; race: white coded 1, non-white coded 0; ethnicity: Hispanic/Latino(a) coded 1, non-Hispanic/Latino(a) coded 0; activity participation: at least one activity coded 1, no activities coded 0; part-time job coded 1, no job coded 0; O.R. = odds ratio; C.I. = 95% confidence interval;

three-level alcohol use variable dummy coded for analytic purposes with recent abstinence as the reference group. Statistically significant results at p ≤ .01 indicated in bold. Two-way interactions of part-time job status with impulsivity and with sensation seeking were tested initially, however these interactions were not statistically significant in any of the models reported in this table, therefore the interactions were dropped and models were re-tested without them. Thus the models reported here included no interactions.