Table III.

Negative binomial regression results predicting number of partners from alcohol use

	Wald χ2	estimate (95% CI)
Predictor: Maximum drinks/day
Model 1a
Sex	5.49	−0.15* (−0.28, −0.02)
Maximum drinks/day	4.71	0.02* (0.002, 0.03)
Model 1b
Sex	23.60	−0.56*** (−0.79, −0.33)
Maximum drinks/day	0.81	−0.01 (−0.03, 0.01)
Sex x Maximum drinks/day	19.02	0.06*** (0.03, 0.09)
Predictor: heavy drinking frequency
Model 2a
Sex	7.03	−0.17** (−0.29, −0.04)
Heavy drinking frequency	6.26	0.04* (0.01, 0.07)
Model 2b
Sex	17.23	−0.46*** (−0.68, −0.25)
Heavy drinking frequency	0.11	0.01 (−0.03, 0.04)
Sex x Heavy drinking frequency	7.46	0.08** (0.02, 0.14)
Predictor: Drinks per typical week
Model 3a
Sex	7.06	−0.16** (−0.29, −0.04)
Drinks per typical week	5.57	0.01* (0.002, 0.02)
Model 3b
Sex	19.21	−0.46*** (−0.67, −0.26)
Drinks per typical week	0.01	0.00 (−0.01, 0.01)
Sex x Drinks per typical week	12.27	0.04*** (0.02, 0.06)
Predictor: AUDIT-C
Model 4a
Sex	6.89	−0.16** (−0.28, −0.04)
AUDIT-C	4.80	0.03* (0.003, 0.05)
Model 4b
Sex	13.70	−0.49*** (−0.76, −0.23)
AUDIT-C	0.19	0.01 (−0.02, 0.04)
Sex x AUDIT-C	4.80	0.05* (0.01, 0.10)
Predictor: SIP-2R
Model 5a
Sex	6.51	−0.16* (−0.28, −0.04)
SIP-2R	3.01	0.01 (−0.001, 0.02)
Model 5b
Sex	10.55	−0.31** (−0.50, −0.12)
SIP-2R	0.07	0.00 (−0.01, 0.01)
Sex x SIP-2R	6.35	0.02* (0.005, 0.04)

Note. AUDIT-C = 3-item short form of the Alcohol Use Disorder Identification Test. SIP-2R = Short Inventory of Problems. DAST-10 = 10-item version of the Drug Abuse Screening Test. All analyses controlled for race, employment status, sex, drug use, and depression; drug use x sex and depression x sex interaction terms were included in interaction models (Model 1b–Model 5b)

^*p < .05;

^**p < .01;

^***p < .001.