| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3.8%
|
| 1 | Never | 13 |
10%
|
| 2 | Once a week | 60 |
46.2%
|
| 3 | Between 2 and 4 times a week | 19 |
14.6%
|
| 4 | Daily | 30 |
23.1%
|
| 5 | More than once a day | 3 |
2.3%
|
| Sysmiss | 230 |