| Menstrual cycle |
| |||
| Regular | 22.5 | 5.1 | <0.001 | HS |
| Irregular | 20.1 | 5.4 | ||
| Contraceptive methods |
| |||
| Yes | 20.9 | 5.4 | 0.01 | S |
| No | 22 | 5.3 | ||
| Pregnancy |
|
|
|
|
| Yes | 22.5 | 5.4 | 0.03 | S |
| No | 21.1 | 5.3 | ||
| Mutilation |
| |||
| Yes | 20.3 | 5.2 | <0.001 | HS |
| No | 25.3 | 3.9 | ||
| Degree of mutilation |
| |||
| 1st | 22.6 | 4.5 | <0.001 | HS |
| 2nd | 16.3 | 3.7 | ||