| Variables | Frequency | Percent |
| Types of infertility |
|
|
| Primary | 261 | 75.7 |
| Secondary | 84 | 24.3 |
| Duration of treatment in years |
|
|
| ≤2 | 214 | 62.03 |
| 3 - 5 | 107 | 31.01 |
| 6 - 8 | 14 | 4.06 |
| ≥9 | 10 | 2.89 |