Table 1.

Characteristics of study participants

Baseline sample characteristics (n = 402)
Age, mean (SD)	40.0 (9.8)
Female, n (%)	100 (24.9%)
Homelessness (1+ night/past 3 months), n (%)	259 (64.4%)
Unemployed, n (%)	173 (43.0%)
Marital status, married, n (%)	25 (6.2%)
Education level (<High School, HS, >HS)	23.6%/48.8%/27.6%
Race ethnicity, n (%)
Non-Hispanic white	160 (39.8%)
Non-Hispanic black	152 (37.8%)
Hispanic	59 (14.7%)
Non-Hispanic other	31 (7.7%)
Alcohol use, past 30 days
Number of drinks per week, median (25th, 75th)	61.7 (25.9; 119.7)
Drinks/drinking day, median (25th, 75th)	14.6 (9.0; 23.4)
Maximum drinks in 1 day, median (25th, 75th)	24.0 (14.0; 39.0)
Percent days abstinent, median (25th, 75th)	25.0 (0.0; 66.7)
Any binge drinking, n (%)	400 (99.5%)
Current tobacco use, n (%)	360 (89.6%)
Heroin, cocaine or marijuana use, past 30 days, n (%)	344 (85.6%)
HCV infectiona	159 (39.9%)
SF-12 Physical Component Summary, mean (SD)	41.5 (8.4)
SF-12 Mental Component Summary, mean (SD)	30.5 (9.8)
Addiction Severity Index—alcohol, mean (SD)	0.6 (0.3)
Addiction Severity Index—drugs, mean (SD)	0.3 (0.2)
Katz comorbidity scale, lifetime, mean (SD)	0.8 (1.1)
Alcohol use at follow-up (n = 374)b
Number of drinks per week, median (25th, 75th)	2.5 (0.0; 25.2)
Drinks/drinking day, median (25th, 75th)	4.5 (0.0; 11.0)
Maximum drinks in one day, median (25th, 75th)	6.0 (0.0; 14.0)
Percent days abstinent, median (25th, 75th)	93.3 (56.7; 100.0)
Any binge drinking, n (%)	202 (54.0%)

SF-12: Short Form Health Survey v2.

^aHCV status was based on antibody testing and/or viral load testing results. The majority of the sample (401/402, 99.8%) was antibody tested, and of those, 47.7% (84/176) who tested seropositive had results confirmed with HCV viral load testing.

^bi.e. 6 or 12 month depending when the tests were available for each participant.