| Value | Category | Cases | |
|---|---|---|---|
| 1 | Just before period begins | 638 |
7.2%
|
| 2 | During the period | 217 |
2.4%
|
| 3 | Right after her period has ended | 1889 |
21.3%
|
| 4 | Halfway between two periods | 5571 |
62.8%
|
| 6 | Other | 226 |
2.5%
|
| 8 | DK | 337 |
3.8%
|
| Sysmiss | 4579 |