Variables associated with prevalent HSV-2 infection in bivariate and multivariate analyses among truck drivers in Foz do Iguaçu, Brazil, 2003–2005
| Characteristics* | N (%)† | Unadjusted OR (95% CI)‡ § (n=799)* | Adjusted OR (95% CI)‡ § (n=785)* |
| Age (years) | |||
| 18–28 | 24 (15.4) | 1.0 | 1.0 |
| 29–39 | 60 (22.3) | 1.6 (0.9 to 2.7)*** | 1.5 (0.8 to 2.6) |
| 40–49 | 85 (30.6) | 2.4 (1.4 to 4.1)* | 2.1 (1.2 to 3.6)** |
| ≥50 | 52 (39.4) | 3.5 (2.0 to 6.3)** | 3.1 (1.7 to 5.7)** |
| Education (years) | |||
| >10 | 43 (24.6) | 1.0 | 1.0 |
| 8–10 | 45 (22.2) | 0.8 (0.5 to 1.4) | 0.9 (0.6 to 1.6) |
| 0–7 | 133 (29.5) | 1.3 (0.8 to 1.9) | 1.2 (0.7 to 1.9) |
| Country of residence | |||
| Brazil | 155 (25.5) | 1.0 | 1.0 |
| Others | 67 (29.7) | 1.2 (0.8 to 1.7) | 1.4 (1.0 to 2.1)*** |
| Years working as truck driver | |||
| <5 | 27 (15.1) | 1.0 | – |
| 5–10 | 47 (21.0) | 1.5 (0.9 to 2.6) | – |
| 11–20 | 67 (29.6) | 2.4 (1.4 to 3.9)* | – |
| >20 | 81 (38.6) | 3.5 (2.1 to 5.9)** | – |
| Duration of trips (weeks) | |||
| <1 | 48 (26.1) | 1.0 | – |
| 1–2 | 90 (26.3) | 1.0 (0.7 to 1.5) | – |
| 3–4 | 63 (26.1) | 1.0 (0.6 to 1.5) | – |
| >4 | 10 (28.3) | 1.1 (0.5 to 2.5) | – |
| Variable | 10 (34.0) | 1.4 (0.6 to 3.4) | – |
| Having principal/steady partner | |||
| No | 7 (18.9) | 1.0 | 1.0 |
| Yes | 215 (28.2) | 0.6 (0.3 to 1.4) | 0.4 (0.2 to 1.2) |
| Number of lifetime sexual partners | |||
| Up to 10 | 29 (20.2) | 1.0 | 1.0 |
| 11–20 | 30 (20.5) | 1.0 (0.6 to 1.8) | 1.1 (0.6 to 1.8) |
| 21–50 | 35 (25.3) | 1.3 (0.7 to 2.4) | 1.4 (0.7 to 2.6) |
| >50 | 27 (26.2) | 1.4 (0.7 to 2.6) | 1.3 (0.7 to 2.3) |
| Unknown | 28 (36.2) | 2.2 (1.2 to 4.2)* | 1.9 (1.1 to 3.3)* |
| Ever had a male sexual partner† | |||
| No | 130 (22.9) | 1.0 | 1.0 |
| Yes | 20 (44.9) | 2.7 (1.4 to 5.2)* | 1.7 (1.0 to 3.2)*** |
| Unprotected vaginal sex with regular partners in past 6 months | |||
| No | 70 (23.7) | 1.0 | – |
| Yes | 151 (28.1) | 1.3 (0.9 to 1.7) | – |
| Unprotected vaginal sex with commercial and occasional partners in past 6 months | |||
| No | 178 (25.5) | 1.0 | – |
| Yes | 43 (32.9) | 1.4 (0.9 to 2.2) | – |
| Unprotected anal sex with any type of partner in past 6 months | |||
| No | 173 (25.5) | 1.0 | 1.0 |
| Yes | 47 (32.2) | 1.4 (0.9 to 2.1) | 1.2 (0.8 to 1.8) |
| Ever received a blood transfusion | |||
| No | 197 (25.8) | 1.0 | – |
| Yes | 22 (36.7) | 1.7 (0.9 to 2.9) | – |
↵* Numbers differ slightly for some characteristics and analyses due to missing data.
↵† Percentages indicate proportion of HBV exposed per category.
↵‡ Exposure data include reported values; OR estimates incorporate imputed data.
↵§ Estimates weighted due to sampling design; ORs reported for variables that remained in the adjusted model, adjusted by other variables shown.
*p<0.05, **p<0.01, ***p<0.10.
HSV-2, herpes simplex virus type-2.