Table 3. Hierarchical Multiple Regression Analyses Predicting Frequency of Condom Use With a New or Casual Partner When Sober and When Intoxicated (N = 298).

	Condom use: sober				Condom use: intoxicated
Variable	B	SE B	β	ΔR2	B	SE B	β	ΔR2
Step 1: control variables				.012				.560**
Condom use when sober	NA	NA	NA		0.82	.04	.75**
Social desirability	0.10	.40	.02		−0.02	.29	−.00
Age	0.05	.03	.11		−0.00	.02	−.01
Gender	0.09	.19	.03		0.11	.14	.03
Step 2: personality variables				.020*				.002
Sensation seeking	−0.12	.14	−.05		−0.04	.10	−.02
Assertiveness	0.25	.11	.13*		0.08	.08	.04
Step 3: alcohol variables				.040**				.038**
Alcohol expectancies	−0.40	.12	−.22**		−0.44	.09	−.22**
Alcohol consumption	−0.00	.00	−.03		0.00	.00	−.03
Step 4: condom-use variables				.189**				.042**
Self-efficacy: partner	0.39	.22	.12		−0.02	.17	−.01
Self-efficacy: intoxicated	0.67	.13	.37**		0.51	.10	.26**
Positive outcome expectancies	0.18	.07	.15**		−0.06	.05	−.05

Note. For gender, men = 0 and women = 1. NA = not applicable.

^*p < .05

^**p < .01.