| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 15 |
48.4%
|
| 2 | Per week | 0 |
0%
|
| 3 | Per month | 12 |
38.7%
|
| 4 | Other (specify) | 4 |
12.9%
|
| Sysmiss | 119 |