| Value | Category | Cases | |
|---|---|---|---|
| -77 | Other, specify the period in the next page | 0 |
0%
|
| -66 | Refused to answer | 0 |
0%
|
| 1 | per week | 108 |
3.5%
|
| 2 | per month | 858 |
27.5%
|
| 3 | per trimester (3 months) | 614 |
19.7%
|
| 4 | per year | 1543 |
49.4%
|
| Sysmiss | 743 |