Univariate analysis of risk factors and prevalent anti-HBc antibody in STD patients
| Characteristic | No of subjects | Prevalence of anti-HBC (%) | Odds ratio (95% CI) | p Value |
|---|---|---|---|---|
| Overall | 497 | |||
| Risk group: | ||||
| Female/non-sex worker | 32 | 8 (25.0) | 1.0 | |
| Female/sex worker | 79 | 69 (87.3) | 20.7 (7.3 to 58.5) | <0.001 |
| Male/no exposure to sex worker | 44 | 12 (27.3) | 1.0 | |
| Male/visited sex worker | 342 | 126 (36.8) | 1.6 (0.7 to 3.3) | 0.215 |
| Age (years): | ||||
| <20 | 68 | 17 (25) | 1.0 | |
| 20–29 | 239 | 92 (38.5) | 1.9 (1.0 to 3.4) | 0.042 |
| > 30 | 190 | 106 (55.8) | 3.8 (2.0 to 7.0) | <0.001 |
| Marital status: | ||||
| Never married | 225 | 85 (37.8) | 1.0 | |
| Married | 212 | 82 (38.7) | 1.0 (0.7 to 1.5) | 0.846 |
| Widowed/divorced | 60 | 48 (80.0) | 6.6 (3.3 to 13.1) | <0.001 |
| Formal education: | ||||
| Some | 393 | 141 (35.9) | 1.0 | |
| None | 104 | 74 (71.2) | 4.4 (2.7 to 7.1) | <0.001 |
| Lifetime number of sexual partners: | ||||
| 1 | 67 | 14 (20.9) | 1.0 | |
| 2–9 | 259 | 91 (35.1) | 2.0 (1.1 to 3.9) | 0.028 |
| 10–999 | 87 | 42 (48.3) | 3.5 (1.7 to 7.3) | 0.001 |
| > 1000 | 84 | 68 (81.0) | 16.1 (7.2 to 35.9) | <0.001 |
| Condom use in past 3 months: | ||||
| No | 247 | 92 (37.2) | 1.0 | |
| Yes | 167 | 95 (56.9) | 2.2 (1.5 to 3.3) | <0.001 |
| Tattooed: | ||||
| No | 303 | 104 (34.3) | 1.0 | |
| Yes | 194 | 111 (57.2) | 2.6 (1.7 to 3.7) | <0.001 |
| History of genital ulcer: | ||||
| No | 295 | 111 (37.6) | 1.0 | |
| Yes | 202 | 104 (51.5) | 1.7 (1.2 to 2.5) | 0.002 |