Table 4.
Sex-specific univariate and multivariate analyses of factors associated with syphilis infection
| Variables | Male (N = 608) | Female (N = 1700) | ||||
|---|---|---|---|---|---|---|
| Prevalence (%) | cOR (95% CI) | aOR (95% CI) | Prevalence (%) | cOR (95% CI) | aOR (95% CI) | |
| Age group (years) | ||||||
| 14–24 | 0 | - | 1.3 | Ref. | ||
| 25–34 | 1.0 | 0.95(0.09–10.59) | 1.8 | 1.34 (0.36–6.64) | ||
| 35–44 | 2.2 | 2.01(0.24–16.90) | 1.6 | 1.23 (0.34–5.96) | ||
| 45–54 | 0.6 | 0.65(0.03–8.46) | 0.8 | 0.61 (0.10–3.58) | ||
| ≥ 55 | 1.1 | Ref. | 0.5 | 0.47 (0.02–4.07) | ||
| Ethnicity | ||||||
| Yi | 0 | 0 | ||||
| Han and others | 1.2 | 1.3 | ||||
| Education | ||||||
| Illiteracy | 2.3 | Ref. | 1.2 | Ref. | ||
| Primary school | 0 | – | 1.4 | 1.13 (0.31–3.13) | ||
| High school and above | 0.6 | 0.25(0.03–2.00) | 1.8 | 1.56 (0.23–5.64) | ||
| Occupation | ||||||
| Students | 0 | 0 | – | |||
| Farmers | 1.1 | 1.2 | 0.36(0.05–2.81) | |||
| Others | 0 | 0.1 | Ref. | |||
| Ever working away from home | ||||||
| No | 0.6 | 0.59 (0.02–3.25) | 1.4 | Ref. | ||
| Yes | 1.2 | Ref. | 1.3 | 0.88 (0.32–3.14) | ||
| Annual income | ||||||
| < 1000 | 0 | 0.7 | Ref. | |||
| 1000–2999 | 1.0 | 1.6 | 2.07 (0.53–14.82) | |||
| 3000–4999 | 2.6 | 1.0 | 1.30 (0.24–10.57) | |||
| 5000–9999 | 1.5 | 1.1 | 2.15 (0.32–18.66) | |||
| ≥ 10,000 | 0 | 1.1 | 2.15 (0.32–18.66) | |||
| Marital status | ||||||
| Ever married | 1.4 | 1.4 | Ref. | |||
| Never married | 0 | 0.4 | 0.32 (0.01–1.52) | |||
| Spouse syphilis | ||||||
| No or unknown | 1.0 | Ref. | 1.2 | Ref. | Ref. | |
| Yes | 20.0 | 26.54 (0.91–217.16) | 50.0 | 78.04 (1.96–3015.11) ** | 126.66 (7.58–2122.94) ** | |
| Ever using injection drugs | ||||||
| No | 0.7 | Ref. | Ref. | 1.3 | – | |
| Yes | 5.4 | 7.94 (1.91–29.32) ** | 9.42 (2.47–35.87) ** | 0 | – | |
| Having multiple sexual partners | ||||||
| No | 0.8 | Ref. | 1.1 | Ref. | ||
| Yes | 2.1 | 2.55 (0.62–9.27) | 2.6 | 2.41 (0.84–5.98) | ||
| Condom use | ||||||
| Always or occasionally | 1.5 | Ref. | 2.5 | Ref. | ||
| Never | 1.2 | 0.79 (0.20–3.98) | 0.8 | 0.34 (0.12–0.90) | ||
| Ever having blood transfusion | ||||||
| No or unknown | 1.1 | 1.2 | Ref. | Ref. | ||
| Yes | 0 | 10.5 | 10.32 (1.43–39.98) * | 10.51 (1.58–41.21) ** | ||
| HIV infection | ||||||
| No | 1.0 | Ref. | 1.2 | Ref. | ||
| Yes | 2.5 | 2.73 (0.37–11.42) | 3.1 | 2.78 (0.40–9.89) | ||
| HBV infection | ||||||
| No | 1.1 | Ref. | 1.1 | Ref. | Ref. | |
| Yes | 1.3 | 1.3 (0.06–7.68) | 4.2 | 4.11 (1.31–10.71) * | 4.19 (1.35–10.93) ** | |
| HCV infection | ||||||
| No | 0.7 | Ref. | Ref. | 1.2 | Ref. | |
| Yes | 7.4 | 11.18 (2.67–41.63) ** | 13.28 (3.20–51.70) ** | 11.8 | 11.42 (1.58–44.99) * | 8.93 (0.82–96.97) |
*P < 0.05, **P < 0.01