| Value |
Category |
| 1 |
Week before period begins |
| 2 |
During the period |
| 3 |
First week after period has end |
| 4 |
Second week after period has end |
| 6 |
Other |
| 8 |
dk |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.