| Variable | Positive | Negative | Not done | Total | p-value | |
| Age group (in years) | ||||||
| 1 - 13 | 26 (3.1) | 14 (1.7) | 0 (0.0) | 40 (2.3) | 0.000 | |
| 14 - 26 | 129 (15.5) | 200 (24.4) | 11 (18.3) | 340 (19.9) | ||
| 27 - 39 | 396 (47.7) | 228 (27.8) | 22 (36.7) | 646 (37.8) | ||
| 40 - 52 | 221 (26.6) | 177 (21.8) | 13 (21.7) | 411 (24.0) | ||
| 53 - 65 | 47 (5.7) | 117 (14.3) | 9 (15.0) | 173 (10.1) | ||
| 66 - 78 | 11 (1.3) | 60 (7.3) | 4 (6.7) | 75 (4.4) | ||
| ≥79 | 1 (0.5) | 24 (2.9) | 1 (1.7) | 26 (1.5) | ||
| Total | 831 (100.0) | 820 (100.0) | 60 (100.0) | 1711 (100.0) | ||
| Sex | ||||||
| Male | 604 (72.7) | 699 (85.2) | 57 (95.0) | 1360 (79.5) | 0.000 | |
| Female | 227 (27.3) | 121 (14.8) | 3 (5.0) | 351 (20.5) | ||
| Total | 831 (100.0) | 820 (100.0) | 60 (100.0) | 1711 (100.0) | ||