| Variable | Item | All patients | Category of patient | t-test (P-value) | ||||
| Normal sperm count | Low sperm count | |||||||
| Total (%) | Mean (±sd) | n | Mean (±sd) | n | Mean (±sd) | |||
| All | Age | 802 (100.0) | 42.7 (7.0) | 453 | 42.6 (7.0) | 349 | 42.8 (7.2) | not significant |
| Age groups (years) | <30 | 11 (1.4) | 27.6 (1.6) | 4 | 26.5 (2.6) | 7 | 28.1 (0.7) | not significant |
| 30 - 39 | 263 (32.8) | 35.7 (2.6) | 153 | 35.7 (2.5) | 110 | 35.7 (2.6) | not significant | |
| 40 - 49 | 396 (49.4) | 44.0 (2.9) | 224 | 44.0 (2.9) | 172 | 44.0 (3.0) | not significant | |
| 50 - 59 | 122 (15.2) | 53.1 (2.6) | 66 | 52.9 (2.5) | 56 | 53.2 (2.7) | not significant | |
| ≥60 | 10 (1.2) | 63.9 (4.2) | 6 | 64.2 (2.8) | 4 | 63.5 (6.3) | not significant | |
| Body Mass Index (kg/m2) | BMI | 802 (100.0) | 26.9 (3.9) | 453 | 26.8 (4.0) | 349 | 27.1 (3.7) | not significant |
| <18.5 | 4 (0.5) | 18.1 (0.9) | 1 | 18.5 (0.0) | 3 | 17.9 (1.0) | - | |
| 18.5 - 24.9 | 245 (30.5) | 23.2 (1.3) | 147 | 23.2 (1.4) | 98 | 23.2 (1.3) | not significant | |
| 25.0 - 29.9 | 408 (50.9) | 27.1 (1.3) | 234 | 27.2 (1.3) | 174 | 27.1 (1.3) | not significant | |
| ≥30 | 145 (18.2) | 32.8 (3.8) | 71 | 33.2 (4.9) | 74 | 32.5 (2.3) | not significant | |