Table 4.
Predictors of STI incidence
| STI incidence | Univariate model | ||
|---|---|---|---|
|
|
|
||
| Characteristics | Level | OR (95% CI) | p |
| Time | 1.00 (0.95, 1.05) | 0.9993 | |
| General health | 0.96 (0.88, 1.04) | 0.3366 | |
| Physical functioning | 1.08 (0.95, 1.22) | 0.2293 | |
| Role functioning | 0.98 (0.90, 1.06) | 0.5532 | |
| Social functioning | 0.93 (0.85, 1.02) | 0.1291 | |
| Cognitive functioning | 0.88 (0.80, 0.96) | 0.0034 | |
| Pain | 1.00 (0.92, 1.08) | 0.9671 | |
| Mental health | 1.08 (0.92, 1.28) | 0.3407 | |
| Energy/fatigue | 0.97 (0.89, 1.06) | 0.5278 | |
| Social support | 0.96 (0.93, 0.99) | 0.0112 | |
| HIV disclosure behaviours | 0.85 (0.54, 1.34) | 0.4772 | |
| Fear of consequences of HIV disclosure | 1.39 (0.95, 2.02) | 0.0923 | |
| Community beliefs: power imbalance and condom negotiation | 0.81 (0.63, 1.03) | 0.0899 | |
| Community beliefs: relationship dynamics | 0.88 (0.70, 1.09) | 0.2447 | |
| Community beliefs: community negative beliefs about HIV | 1.10 (0.90, 1.33) | 0.3625 | |
| Community beliefs: sexual immorality | 0.90 (0.71, 1.13) | 0.3665 | |
| Personal beliefs: sexual practices | 1.04 (0.85, 1.28) | 0.7110 | |
| Personal beliefs: partner concerns | 0.84 (0.67, 1.05) | 0.1187 | |
| Personal beliefs: viral load beliefs | 1.16 (0.94, 1.44) | 0.1765 | |
| Personal beliefs: dislike of condoms | 0.97 (0.80, 1.18) | 0.7827 | |
| Adherence | 0.94 (0.78, 1.13) | 0.5236 | |
| Alcohol score | 1.06 (1.03, 1.10) | 0.0005 | |
| Substance use | No versus yes | 0.66 (0.36, 1.18) | 0.1585 |
| CESD | Mild to moderate depressive symptoms versus normal | 1.23 (0.76, 1.99) | 0.4008 |
| CESD | Severe depressive symptoms versus normal | 1.65 (1.02, 2.67) | 0.0394 |
| Site | Brazil versus Thailand | 1.61 (1.01, 2.63) | 0.0455 |
| Zambia versus Thailand | 2.78 (1.33, 5.56) | 0.0063 | |
| Risk group | MSM versus HW | 4.76 (2.86, 7.69) | <0.00 |
| STI incidence | Multivariate predictive model (backwards mode; selection, p) | ||
| Alcohol score | 1.04 (1.01, 1.08) | 0.0231 | |
| Risk group within site | |||
| Brazil | MSM versus HW | 1.93 (0.92, 4.04) | 0.0804 |
| Thailand | MSM versus HW | 12.3 (4.44, 33.98) | <0.0001 |
| Site within risk group | |||
| MSM | Thailand versus Brazil | 2.63 (1.52, 4.57) | 0.0006 |
| HW | Thailand versus Brazil | 0.41 (0.13, 1.27) | 0.1234 |
| Thailand versus Zambia | 0.41 (0.13, 1.29) | 0.1274 | |
| Brazil versus Zambia | 0.99 (0.40, 2.44) | 0.9873 | |
MSM=men who have sex with men; HW=heterosexual women; HM=heterosexual men; STI=sexually transmitted infection; CESD=Center for Epidemiological Studies Depression Scale.
The bold values indicate variables that were statistically significant at p<0.05.