| SEX | RESULT | Total | Chi2 | P-value | |
| POSITIVE | NEGATIVE | ||||
| Male | 85 | 451 | 536 | 11.4 | 0.0007 |
| (60.3%) | (45.2%) | ||||
| Female | 56 (39.7%) | 548 (54.9%) | 604 | ||
| TOTAL | 141 | 999 | 1140 | ||