|
| Male characteristics |
| Age mean (± SD) | 34.8 (7) |
| Race N (%) |
|
| Caucasian | 171 (98%) |
| Smoking N (%) |
|
| Yes | 61 (35%) |
| No | 84 (48%) |
| Unknown | 30 (17%) |
| Alcohol N (%) |
|
| Yes | 99 (57%) |
| No | 44 (25%) |
| Unknown | 32 (18%) |
| Drugs N (%) |
|
| Yes | 5 (3%) |
| No | 132 (75%) |
| Unknown | 38 (22%) |
| Professions with negative effects on fertility1 N (%) | 10 (6%) |
| CO2-welder | 5 (3%) |
| With solvents | 4 (2%) |
| With oil | 1 (1%) |
| No | 119 (68%) |
| Unknown | 46 (26%) |
| Medication possible affecting fertility2 N (%) | 8 (5%) |
| Sexual dysfunction | 8 (5%) |
| Decreased quality/quanitity of the sperm | 6 (3%) |
| No | 165 (94%) |
| (Former) disorders affecting fertility N (%) | 6 (3%) |
| Malignancy | 2 (1%) |
| Chemotherapy | 2 (1%) |
| Retractlie testicle | 1 (1%) |
| Testosterone deprivation | 1 (1%) |
| Suppletion | 2 (1%) |
| Spermatocele | 1 (1%) |
| No | 168 (96%) |