| classification | Sex | ||
| Male Freq (%) | Female Freq (%) | Total Freq (%) | |
| Not significant (≥500) | 34 (6.8) | 202 (40.4) | 236 (47.2) |
| Mild (350 - 499) | 47 (9.4) | 152 (30.4) | 199 (39.8) |
| Advanced (200 - 349) | 5 (1.0) | 19 (3.8) | 24 (4.8) |
| Severe (<200) | 14 (2.8) | 27 (5.4) | 41 (8.2) |
| Total | 100 (20.0) | 400 (80.0) | 500 (100.0) |