| Mean age (SD) | 43.8 (8.41) | 44.1 (8.30) | 38.1 (8.00) | <0.001 |
| Sexual orientation | | | | |
| Gay | 11 (2) | 0 (0) | 11 (34) | |
| Straight | 459 (95) | 446 (99) | 13 (41) | |
| Bisexual | 11 (2) | 3 (1) | 8 (25) | <0.001 |
| Race | | | | |
| African-American | 392 (82) | 370 (82) | 22 (69) | |
| Other | 89 (19) | 79 (18) | 10 (31) | 0.06 |
| Unemployed | | | | |
| No | 60 (12) | 58 (13) | 2 (6) | |
| Yes | 421 (88) | 391 (87) | 30 (94) | 0.41 |
| Homeless past 6 months | | | | |
| No | 302 (63) | 285 (63) | 17 (53) | |
| Yes | 179 (37) | 164 (37) | 15 (47) | 0.26 |
| Incarcerated past 6 months | | | | |
| No | 317 (66) | 292 (65) | 25 (78) | |
| Yes | 164 (34) | 157 (35) | 7 (22) | 0.18 |
| HIV status | | | | |
| Negative | 413 (86) | 393 (88) | 20 (63) | |
| Positive | 68 (14) | 56 (12) | 12 (37) | 0.001 |
| Alcohol use | | | | |
| Never | 101 (21) | 96 (21) | 5 (16) | |
| <Once a week | 94 (20) | 83 (18) | 11 (34) | |
| 1–4 times a week | 134 (28) | 122 (27) | 12 (38) | |
| ⩾Almost daily | 152 (32) | 148 (33) | 4 (13) | 0.02 |
| Smoke crack | | | | |
| No | 183 (38) | 174 (39) | 9 (28) | |
| Yes | 298 (62) | 275 (61) | 23 (72) | 0.26 |
| Inject past 6 months | | | | |
| No | 51 (11) | 47 (10) | 4 (13) | |
| Yes | 430 (89) | 402 (90) | 28 (88) | 0.76 |