Risk factors for incident syphilis: odds ratios for selected sociodemographic factors, by sex (second case-control study)
| Males | Females | |||||||
|---|---|---|---|---|---|---|---|---|
| Variables | Case | Control | Adjusted OR* (95% CI) | Case | Control | Adjusted OR* (95% CI) | ||
| *Odds ratio adjusted for age and community of residence (one community dropped for analysis of females). | ||||||||
| †Significance calculated with test for trend. | ||||||||
| ‡Only applicable to those currently or previously married. | ||||||||
| Number participated | 119 | 367 | 91 | 341 | ||||
| Age at baseline (years) | ||||||||
| 15–19 | 27 | 61 | 1 | p=0.5 | 37 | 47 | 1 | p<0.001 |
| 20–24 | 20 | 57 | 0.97 (0.46–2.04) | 13 | 68 | 0.25 (0.12–0.53) | ||
| 25–34 | 35 | 108 | 0.78 (0.41–1.46) | 17 | 100 | 0.21 (0.11–0.43) | ||
| 35–44 | 17 | 66 | 0.60 (0.29–1.25) | 10 | 64 | 0.22 (0.10–0.51) | ||
| 45–54 | 20 | 75 | 0.62 (0.31–1.25) | 14 | 62 | 0.28 (0.13–0.60) | ||
| Education† | ||||||||
| None/adult | 29 | 55 | 1 | p=0.016 | 36 | 155 | 1 | p=0.5 |
| Primary 1–3 years | 11 | 43 | 0.49 (0.21–1.14) | 11 | 23 | 1.86 (0.74–4.68) | ||
| Primary 4+ years | 79 | 269 | 0.46 (0.25–0.84) | 44 | 163 | 0.80 (0.41–1.54) | ||
| Main current ocupation | ||||||||
| Farmer | 114 | 315 | 1 | p=0.002 | 85 | 322 | 1 | p=0.9 |
| Other | 5 | 52 | 0.26 (0.10–0.69) | 6 | 19 | 0.95 (0.33–2.69) | ||
| Lived away from present community in past 2 years | ||||||||
| No | 93 | 316 | 1 | p=0.07 | 66 | 305 | 1 | p<0.003 |
| Yes | 26 | 51 | 1.69 (0.96–2.95) | 25 | 36 | 2.72 (1.41–5.25) | ||
| Current marital status: | ||||||||
| Married, never divorced/widowed | 34 | 149 | 1 | p=0.24 | 46 | 178 | 1 | p=0.6 |
| Married, previous divorce/widow | 47 | 130 | 1.61 (0.92–2.81) | 17 | 85 | 0.79 (0.40–1.58) | ||
| Currently widowed/divorced | 11 | 20 | 2.07 (0.85–4.99) | 13 | 51 | 1.09 (0.48–2.45) | ||
| Never married | 27 | 68 | 1.08 (0.51–2.30) | 15 | 27 | 0.59 (0.24–1.43) | ||
| Separated from spouse in past 2 years‡ | ||||||||
| No | 53 | 212 | 1 | p=0.025 | 42 | 176 | 1 | p=0.9 |
| Yes | 28 | 67 | 1.96 (1.10–3.49) | 21 | 86 | 1.06 (0.55–2.06) | ||