| Value | Category |
|---|---|
| -4 | missing data |
| -3 | refuse to answer |
| -2 | not applicable |
| -1 | do not know or don't remember |
| 1 | in the middle of her cycle |
| 2 | during her period |
| 3 | right after her period has ended |
| 4 | just before her period begins |
| 5 | same chance all the time |
| 6 | end of cycle |