Table 1.
Characteristics of different bridging groups, Hai Phong City, 2007
| Characteristics | Unlikely bridgers No (%) | Potential bridgers No (%) | Active bridgers No (%) | χ2 valueat valueb | p value |
|---|---|---|---|---|---|
| Number of respondents | 129 | 147 | 16 | ||
| Age | −1.24 | p1 0.212b | |||
| Mean (SD) | 30.2 (1.1) | 31.9 (0.8) | 32.8 (2.1) | −1.09 | p2 0.274b |
| Monthly income | |||||
| Mean | 3,309,908 | 5,245,891 | 3,637,500 | −0.696 | p1 0.48b |
| SD | 363,441 | 2,757,690 | 672,557 | −0.42 | p2 0.66b |
| Residence in HP city | |||||
| > 6 months | 112 (88.9%) | 124 (84.3%) | 14 (87.5%) | 1.66 | 0.437a |
| < 6 months | 14 (11.1%) | 23 (15.6%) | 2 (12.5%) | ||
| Currently living with wife/girlfriend | |||||
| Yes | 48 (38.1%) | 86 (58.5%) | 10 (62.5%) | 9.92 | 0.007a |
| No | 78 (61.9%) | 61 (41.5%) | 6 (37.5%) | ||
| Regular customer | |||||
| Yes | 68 (59.9%) | 83 (56.1%) | 8 (50%) | 0.283 | 0.868a |
| No | 58 (46%) | 65 (43.9%) | 8 (50%) | ||
| Number of sexual partners in the past month | |||||
| > 5 partners | 22 (17.5%) | 35 (23.6%) | 5 (31.3%) | 2.93 | 0.231a |
| ≤5 partners | 104 (82.5%) | 113 (76.4%) | 11 (68.7%) | ||
| Number of sexual encounters in the past month | 0.306 | p1 0.75b | |||
| Mean (SD) | 11.1 (1.1) | 10.7 (0.7) | 13.9 (2.5) | −1.025 | p2 0.31b |
| Number of sexual encounters with FSWs in the past month | |||||
| > 4 times | 34 (27%) | 42 (28.4%) | 5 (31.3%) | 0.288 | 0.866a |
| ≤4 times | 92 (73%) | 106 (71.6%) | 11 (68.7%) | ||
| Consumed alcohol before last sexual intercourse with FSW | |||||
| Yes | 89 (70.6%) | 100 (68.5%) | 12 (75%) | 0.365 | 0.833a |
| No | 37 (29.4%) | 46 (31.5%) | 4 (25%) | ||
| Had ever used drugs (heroin, ecstasy, marijuana, etc.) | |||||
| Yes | 17 (13.5%) | 19 (12.9%) | 3 (18.7%) | 0.419 | 0.811a |
| No | 109 (86.5%) | 128 (87%) | 13 (81.3%) | ||
| Used drugs before last sexual intercourse with FSW | |||||
| Yes | 8 (50%) | 10 (32.6%) | 2 (66.7%) | 0.281 | 0.869a |
| No | 8 (50%) | 9 (47.4%) | 1 (33.3%) | ||
| Ever tested for HIV | |||||
| No | 92 (73.1%) | 104 (70.7%) | 12 (75%) | 0.249 | 0.883a |
| Yes | 34 (26.9%) | 43 (29.3%) | 4 (25%) | ||
| Reported at least one sign(s)/symptom(s) of STIs in the past 12 months | |||||
| Yes | 30 (23.8%) | 31 (20.9%) | 3 (18.8%) | 2.25 | 0.325a |
| No | 96 (76.2%) | 117 (79.1%) | 13 (81.2%) | ||
| Reported at least one sign(s)/symptom(s) of STIs in the past month | |||||
| Yes | 21 (16.7%) | 31 (20.9%) | 3 (18.8%) | 1.34 | 0.513a |
| No | 105 (83.3%) | 125 (84.5%) | 13 (81.2%) | ||
| Reported condom breakage/slippage in the past month | |||||
| Yes | 28 (22.2%) | 39 (26.4%) | 6 (37.5%) | 2.32 | 0.314a |
| No | 98 (77.8%) | 109 (73.6%) | 10 (62.5%) | ||
| Perceived risk of becoming infected with HIV | |||||
| > 4, at risk or high risk | 31 (24.8%) | 48 (32.8%) | 8 (61.5%) | 5.77 | 0.056a |
| ≤ 3, average or low risk | 94 (75.2%) | 98 (67.2%) | 5 (38.5%) | ||
| HIV prevalence | |||||
| Prevalence | 4.76% | 4.05% | 6.25% | 0.206 | 0.902a |
| 95% CI | 0.29–9.23% | 1.0–7.1% | 0–18.6% | ||
| Syphilis prevalence | |||||
| Prevalence | 1.58% | 1.35% | 0% | 0.269 | 0.874a |
| 95% CI | 0–3.77% | 0–3.23% | 0 | ||
| HSV-2 prevalence | |||||
| Prevalence | 8.77% | 21.16% | 33.33% | 6.29 | 0.043a |
| 95% CI | 3.71–13.83% | 12.96–29.36% | 10.1–56.5% | ||
Note: Totals do not add to 100% for some variables due to missing values
a
Chi square test
b
t-test obtaining p<0.05, compared means of potential bridgers vs. unlikely bridgers (p1) and active bridgers vs. unlikely bridgers (p2) Estimates of prevalence and SD for cluster survey design