Table 1. Incidence rate by characteristics at baseline.
| Total | MSMs | Events | Person-yr | Rate (95% CI) | AHR (95% CI) |
|---|---|---|---|---|---|
| 3625 | 440 | 6208.53 | 7.1 (6.4-7.7) | ||
| Age (years) | |||||
| 18–25 | 1512 | 196 | 2280.34 | 8.6 (7.4–9.8) | 1.00 |
| 26–40 | 1746 | 206 | 3188.88 | 6.5 (5.6–7.3) | 0.71 (0.57–0.89)† |
| 41– | 367 | 38 | 739.31 | 5.1 (3.5–6.8) | 0.53 (0.35–0.79)† |
| Education | |||||
| Primary school | 127 | 13 | 185.77 | 7.0 (3.2–10.8) | 1.00 |
| Secondary school | 829 | 105 | 1456.53 | 7.2 (5.8–8.6) | 0.90 (0.51–1.61) |
| High school | 1317 | 181 | 2304.21 | 7.9 (6.7–9.0) | 0.97 (0.55–1.71) |
| Post–high school | 1149 | 118 | 1946.42 | 6.1 (5.0–7.2) | 0.74 (0.42–1.33) |
| Missing data | 203 | 23 | 315.59 | 7.3 (4.3–10.3) | 0.95 (0.45–2.01) |
| Marital status | |||||
| Never married | 2405 | 291 | 3924.01 | 7.4 (6.6–8.3) | 1.00 |
| Married (with woman) | 827 | 100 | 1612.16 | 6.2 (5.0–7.4) | 0.99 (0.76–1.30) |
| Cohabit(with man) | 66 | 4 | 99.10 | 4.0 (0.1–8.0) | 0.52 (0.19–1.40) |
| Divorce&widower | 182 | 27 | 361.68 | 7.5 (4.6–10.3) | 1.22 (0.80–1.87) |
| Missing data | 145 | 18 | 211.58 | 8.5 (4.6–12.4) | 1.68 (0.91–3.10) |
| HIV status of partners | |||||
| Positive | 41 | 6 | 60.63 | 9.9 (2.0–17.8) | 1.00 |
| Negative | 335 | 48 | 633.79 | 7.6 (5.4–9.7) | 0.89 (0.38–2.09) |
| Unknown | 2337 | 285 | 3902.60 | 7.3 (6.5–8.2) | 0.84 (0.37–1.90) |
| No partner | 558 | 62 | 936.56 | 6.6 (5.0–8.3) | 0.71 (0.30–1.66) |
| Missing data | 354 | 39 | 674.95 | 5.8 (4.0–7.6) | 0.62 (0.25–1.51) |
| Sex Role | |||||
| Insertive only | 173 | 11 | 282.40 | 3.9 (1.6–6.2) | 1.00 |
| Receptive only | 102 | 16 | 188.39 | 8.5 (4.3–12.7) | 2.00 (0.92–4.36) |
| Both | 917 | 124 | 1320.44 | 9.4 (7.7–11.0) | 2.27 (1.22–4.23) |
| Missing data | 2433 | 289 | 4417.30 | 6.5 (5.8–7.3) | 1.88 (0.94–3.75) |
| Type of partnership | |||||
| Casual only | 685 | 69 | 999.00 | 6.9 (5.3–8.5) | 1.00 |
| Regular only | 500 | 52 | 691.58 | 7.5 ((5.5–9.6) | 0.98 (0.61–1.58) |
| Both | 738 | 99 | 1051.75 | 9.4 (7.6–11.3) | 1.23 (0.79–1.91) |
| Missing data | 1702 | 220 | 3466.20 | 6.3 (5.5–7.2) | 1.00 (0.58–1.75) |
| Group sex | |||||
| No | 1747 | 194 | 2487.01 | 7.8 (6.7–8.9) | 1.00 |
| Yes | 366 | 50 | 547.87 | 9.1 (6.6–11.7) | 1.09 (0.79–1.50) |
| Missing data | 1512 | 196 | 3173.65 | 6.2 (5.3–7.0) | 0.52 (0.25–1.10) |
| Knowledge | |||||
| Know well | 326 | 34 | 503.59 | 6.8 (4.5–9.0) | 1.00 |
| A little | 1675 | 197 | 2383.34 | 8.3 (7.1–9.4) | 1.19 (0.82–1.72) |
| Unknown | 175 | 17 | 269.12 | 6.3 (3.3–9.3) | 0.93 (0.51–1.69) |
| Missing data | 1449 | 192 | 3052.48 | 6.3 (5.4–7.2) | 1.66 (0.69–4.00) |
| Syphilis | |||||
| No | 3144 | 342 | 5372.28 | 6.4 (5.7–7.0) | 1.00 |
| Yes | 481 | 98 | 836.24 | 11.7 (9.4–14.0) | 1.86 (1.48–2.34)† |
†indicates significant at p<0.05.
Rate: HIV incident rate.