Table 3.
Logistic regression analysis of STIs, social and behavioural factors associated with HIV
| Social and behavioural factors | Odds Ratio (95% CI) | Adjusted Odds Ratio (95% CI)a |
|---|---|---|
| Age in years | 1.31 (1.16–1.47)** | 1.21 (1.06–1.40)* |
| Living with both parents | 0.55 (0.36–0.86)* | 0.65 (0.40–1.10) |
| Level of education in the household b | 0.71 (0.45–1.11) | |
| Percentage of adults employed in the household | 0.96 (0.85–1.09) | |
| Sexual debut before 16 years of age | 0.97 (0.87–1.07) | |
| Number of lifetime sexual partners | 1.27 (1.13–1.42)** | 1.17 (1.04–1.31)* |
| Have a steady partner | 1.13 (0.58–2.18) | |
| Age difference to older partner (years) | ||
| Age-homogenous (≤ 4) | 1 | 1 |
| Intragenerational (5–9) | 1.58 (1.16–2.15)* | 1.51 (1.06–2.15)* |
| Intergenerational (≥ 10) | 2.46 (1.37–4.40)* | 2.06 (1.05–4.06)* |
| Ever been sexually abused | 1.55 (0.96–2.49) | |
| Ever been paid to have sex | 2.12 (0.96–4.70) | |
| Condom used during last sexual intercourse | 1.50 (1.11–2.04)* | 1.60 (1.16–2.20)* |
| Using hormonal contraceptive | 0.84 (0.62–1.15) | |
| Know what an STI is | 1.24 (0.89–1.71) | |
| Number of times treated for an STI | 1.60 (1.27–2.01)** | 1.32 (1.02–1.71)* |
| Taking illicit drugs | 1.99 (1.07–3.69)* | 1.43 (0.65–3.11) |
| Alcohol debut age | ||
| 16 | 2.32 (0.92–5.80) | |
| 17 | 1.27 (0.93–1.70) | |
| 18 | 1.07 (0.81–1.40) | |
| 19 | 1.23 (0.97–1.56) | |
| 20 | 1.08 (0.86–1.35) | |
CI confidence interval
*p < 0.05; **p < 0.001
aAll variables in the table with p < 0.05 in univariate analysis were included in the multivariable analyses
bCategorised as secondary (grade 8–12) or tertiary