Table 1.
Baseline social–demographic, behavioral, and medical characteristics of HIV-positive MSM in San Francisco (N = 369).
| Characteristic | N (%) |
|---|---|
| Demographics | |
| Mean age (years) (±SD) | 45 (±8) |
| Race/ethnicity | |
| Non-Hispanic white | 335 (91) |
| Black | 5 (1) |
| Asian/other | 8 (2) |
| Hispanic | 21 (6) |
| Education | |
| Did not complete college | 144 (39) |
| Completed college | 115 (31) |
| Completed graduate school | 110 (30) |
| Substance use | |
| Smoked >100 lifetime cigarettes | 202 (55) |
| History of injection drug use | 77 (21) |
| Medical history | |
| History anal or genital warts | 279 (76) |
| Mean number of episodes of anal warts | 9 (±24) |
| Prevalent HPV infection at baseline | 339 (92) |
| AIN diagnosed at baseline | 463 (±261) |
| Normal | 60 (21) |
| LGAIN | 85 (29) |
| HGAIN | 144 (49) |
| Mean CD4+ T-cell count (±SD) | 463 (±261) |
| <200 | 50 (14) |
| 200–500 | 178 (49) |
| >500 | 136 (37) |
| Mean HIV viral load (±SD) | 10619 (±47159) |
| <500 | 219 (62) |
| 500–4000 | 61 (17) |
| 4001–20 000 | 46 (13) |
| >20 000 | 30 (8) |
| Currently taking antiretroviral medications | 319 (86) |
| HIV diagnosis in past 12 months | 7 (2) |
| Lifetime sexual history | |
| Number of female partners | |
| 0 | 134 (36) |
| 1–4 | 151 (41) |
| 5+ | 84 (23) |
| Number male partners with whom participant was receptive partner | |
| 0–50 | 147 (40) |
| 51–200 | 109 (30) |
| 201+ | 110 (30) |
| Number male partners with whom participant was insertive partner | |
| 0–50 | 164 (45) |
| 51–200 | 115 (31) |
| 201+ | 89 (24) |
| Number oral–anal contact partners (participant receives anal contact) | |
| 0–10 | 142 (38) |
| 11–50 | 129 (35) |
| 51+ | 98 (27) |
AIN, anal intraepithelial neoplasia; HGAIN, high-grade anal intraepithelial neoplasia; LGAIN, low-grade anal intraepithelial neoplasia. When numbers do not total 369 data were missing.