Table 2 Crude and adjusted odds ratios for HIV infection in 3689 women under 25.
| Explanatory variables | Crude | Adjusted | ||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p Value | OR | 95% CI | p Value | |
| Individual level | ||||||
| Residence | ||||||
| Current urban (1550) | 1.59 | 1.15 to 2.19 | 0.008 | 1.18 | 0.69 to 2.02 | 0.532 |
| Past urban (1106) | 1.77 | 1.39 to 2.25 | 0.000 | 1.44 | 1.12 to 1.87 | 0.006 |
| Resident less than 1 year (1405) | 1.13 | 0.85 to 1.52 | 0.373 | 1.11 | 0.82 to 1.49 | 0.476 |
| Marriage | ||||||
| Never married (899) | 1.37 | 1.01 to 1.89 | 0.85 | 0.61 to 1.26 | ||
| Currently married (2728) | 1 | 0.115 | 0.743 | |||
| Formerly married (62) | 1.23 | 0.46 to 3.27 | 1.09 | 0.41 to 2.94 | ||
| Education | ||||||
| None (548) | 1 | 1 | ||||
| Incomplete primary (768) | 1.46 | 0.86 to 2.50 | 0.104 | 1.49 | 0.86 to 2.61 | 0.288 |
| Complete primary (2194) | 1.32 | 0.93 to 1.86 | 1.30 | 0.88 to 1.92 | ||
| Some secondary (179) | 2.00 | 1.05 to 3.79 | 1.51 | 0.77 to 2.97 | ||
| Occupation | ||||||
| Peasant (2379) | 0.60 | 0.45 to 0.80 | 0.002 | 0.73 | 0.57 to 0.94 | 0.016 |
| Sexual precautions | ||||||
| Ever used family planning (382) | 1.31 | 1.05 to 1.64 | 0.021 | 0.90 | 0.71 to 1.13 | 0.312 |
| Ever used condom (545) | 1.85 | 1.27 to 2.69 | 0.003 | 1.52 | 0.96 to 2.40 | 0.071 |
| Other STI | ||||||
| Positive syphilis (526) | 1.22 | 0.84 to 1.76 | 0.281 | 1.22 | 0.87 to 1.72 | 0.225 |
| Self reported STD (252) | 1.52 | 1.02 to 2.27 | 0.040 | 1.24 | 0.82 to 1.89 | 0.289 |
| Sexual partners | ||||||
| Partner <10 years older (1868) | 0.60 | 0.48 to 0.75 | 0.000 | 0.58 | 0.45 to 0.76 | 0.001 |
| More than 1 partner last year (335) | 1.38 | 0.79 to 2.40 | 0.237 | 1.04 | 0.58 to 1.89 | 0.885 |
| Partner had more than 1 partner (778) | 1.23 | 0.93 to 1.62 | 0.144 | 1.16 | 0.89 to 1.50 | 0.261 |
| Sexual exposure | ||||||
| Age* | 1.11 | 1.07 to 1.15 | 0.000 | (co‐linear) | ||
| Years premarital exposure* | 1.15 | 1.09 to 1.22 | 0.000 | 1.20 | 1.12 to 1.28 | 0.000 |
| Years since first marriage* | 0.97 | 0.93 to 1.02 | 0.263 | 1.09 | 1.04 to 1.16 | 0.003 |
| Age at sexual debut* | 1.00 | 0.90 to 1.06 | 0.904 | 1.10 | 1.02 to 1.17 | 0.011 |
| Clinic level | ||||||
| Type of site | ||||||
| Rural remote (705) | 1 | |||||
| Rural roadside (1042) | 1.81 | 1.09 to 2.99 | 0.000 | 1.26 | 0.90 to 1.77 | 0.857 |
| Urban town (656) | 1.56 | 1.34 to 1.80 | 1.02 | 0.62 to 1.67 | ||
| Urban city (1286) | 2.36 | 1.87 to 2.96 | 0.59 | 0.17 to 2.04 | ||
| Risk of infected partner | ||||||
| HIV percentage prevalence* | 1.08 | 1.05 to 1.12 | 0.000 | 1.15 | 1.04 to 1.26 | 0.009 |
| Syphilis percentage prevalence* | 0.98 | 0.93 to 1.03 | 0.368 | 0.96 | 0.83 to 1.08 | 0.200 |
| Behaviour profile | ||||||
| Mean partners in last year* | 1.98 | 0.72 to 5.47 | 0.172 | 3.36 | 0.93 to 10.94 | 0.093 |
| Percentage with no premarital sex* | 0.99 | 0.98 to 1.00 | 0.180 | 0.96 | 0.92 to 1.01 | 0.089 |
| Mobility | ||||||
| Percentage resident <1 year* | 1.02 | 1.01 to 1.04 | 0.010 | 1.02 | 1.00 to 1.04 | 0.035 |
*Continuous variables.