| Specification | F | % |
| Smoking |
|
|
| Current | 155 | 29.0 |
| Never | 230 | 43.0 |
| Ex-smoker | 150 | 28.0 |
| Use of oral contraceptives |
|
|
| Yes | 461 | 86.0 |
| No | 75 | 14.0 |