| Value | Category | Cases | |
|---|---|---|---|
| -77 | Other, specify the period in the next page | 0 |
0%
|
| -66 | Refused to answer | 0 |
0%
|
| 1 | per week | 25 |
2.8%
|
| 2 | per month | 121 |
13.5%
|
| 3 | per trimester (3 months) | 100 |
11.2%
|
| 4 | per year | 648 |
72.5%
|
| Sysmiss | 138 |