Table II.

Reasons for drinking and 12 month alcohol outcomes: Results stratified by hepatitis C virus (HCV) co-infection status (n=234).

		HIV/HCV co-infected patients (n=72)		HIV mono-infected patients (n=162)
Outcome	Reason for drinking	Incidence Risk Ratio (95% Confidence Interval)	P-value	Incidence Risk Ratio (95% Confidence Interval)	P-value
Total number of drinks at 12 months
	Drinking to cope with negative affect	0.73 (0.35, 1.54)	0.41	1.09 (0.78, 1.52)	0.62
	Drinking for social facilitation	0.89 (0.48, 1.64)	0.71	0.94 (0.67, 1.30)	0.69
	Drinking due to social pressure	0.65 (0.31, 1.36)	0.25	0.61 (0.41, 0.91)	0.02
Alcohol dependence symptoms at 12 months
	Drinking to cope with negative affect	4.75 (0.90, 25.12)	0.07	1.85 (1.08, 3.17)	0.02
	Drinking for social facilitation	0.81 (0.30, 2.16)^a	0.67	1.56 (0.98, 2.48)	0.06
	Drinking due to social pressure	1.71 (0.52, 5.68)^a	0.38	1.33 (0.75, 2.34)	0.33

Note. Generalized linear models each include one baseline reason for drinking as a predictor, a 12-month alcohol variable as an outcome, specification of a negative binomial distribution, and control covariates (intervention condition, baseline total drinks or dependence symptoms, age, sex, race, education, language of study completion, HIV medication status, and years since HIV diagnosis).

These models exclude the race covariate due to convergence errors.