| Cause of Sterility (Frequency) | ||||
| Age (Years Old) | Male Factor | Idiopathic | Imunologic + Endometriosis | Anovulation |
| to 35 | 176 | 215 | 78 | 94 |
| 35 - 40 | 60 | 74 | 26 | 21 |
| 40 - 45 | 8 | 19 | 3 | 20 |
| Total | 244 | 308 | 107 | 135 |