| Variable | Seropositive n = 100 | Seronegative n = 516 | Crude ORa | 95% CIb | p valuec | ||
| Freq. (%) | Freq. (%) | ||||||
| Age | 29.36 (6.83) | 29.26 (7.22) |
|
| 0.898 | ||
| Marital status |
|
|
|
|
| ||
|
| Single/Widower | 38 (37.6) | 226 (43.9) | 1 |
|
| |
|
| Married | 63 (62.4) | 289 (56.1) | 0.75 | (0.48, 1.16) | 0.197 | |
| Income (RM) | 1580.97 (964.07) | 1506.52 (826.43) |
|
| 0.423 | ||
| Level of education |
|
|
|
|
| ||
|
| Primary | 11 (11.0) | 29 (5.6) | 1 |
|
| |
|
| Lower secondary | 17 (17.0) | 138 (26.7) | 0.33 | (0.14, 0.77) | 0.010 | |
|
| Upper secondary | 69 (69.0) | 331 (64.1) | 0.55 | (0.26, 1.15) | 0.113 | |
|
| Tertiary | 3 (3.0) | 18 (3.5) | 0.44 | (0.11, 1.79) | 0.251 | |
| Job category |
|
|
|
|
| ||
|
| Riflemen | 89 (89.0) | 460 (89.1) | 0.99 | (0.50, 2.0) | 0.965 | |
|
| Non riflemen | 11 (10.9) | 56 (10.9) | 1 |
|
| |
| Position |
|
|
|
|
| ||
|
| Non officer | 87 (87.0) | 61 (11.8) | 1 |
|
| |
|
| Officer | 13 (13.0) | 455 (88.2) | 1.12 | (0.59, 2.12) | 0.740 | |
| Duration of working (years) | 10.65 (7.36) | 11.67 (7.82) |
|
| 0.229 | ||
| Smoking status |
|
|
|
|
| ||
|
| Smoker | 85 (85.0) | 432 (83.7) | 1 |
|
| |
|
| Never smoke | 15 (15.0) | 84 (16.3) | 0.91 | (0.50, 1.65) | 0.750 | |
| Frequency of operation/training (year) |
|
| 1.07 | (0.85, 1.35) | 0.577 | ||
| Duration of latest operation (days) |
|
| 0.99 | (0.79, 0.99) | 0.024 | ||
| Duration of latest training (days) |
|
| 1.00 | (0.99, 1.01) | 0.945 | ||
| Wound during operation (n = 80) |
|
|
|
|
| ||
|
| Upper limb | 5 (41.7) | 27(39.7) |
|
|
| |
|
| Lower limb | 6 (50.0) | 33 (48.5) |
|
|
| |
|
| Other parts of the body | 1 (8.3) | 8 (11.8) |
|
|
| |
| Hand washing with soap after activity (yes) | 89 (89.0) | 443 (85.9) | 0.75 | (0.38, 1.47) | 0.403 | ||
| Shower after work (yes) | 97 (97.0) | 489 (94.8) | 0.56 | (0.17, 1.88) | 0.349 | ||
| Contact with animals during operation (yes) | 68 (13.2) | 8 (8.0) | 1.75 | (0.81, 3.76) | 0.154 | ||
| Sighting rats/rodents at work site (yes) | 58 (58.0) | 289 (56.0) | 0.92 | (0.60, 1.42) | 0.713 | ||
| House location |
|
|
|
|
| ||
|
| Outside camp | 48 (48.0) | 210 (40.7) | 1 |
|
| |
|
| Inside camp | 52 (52.0) | 306 (59.3) | 0.74 | (0.48, 1.14) | 0.176 | |