| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.4%
|
| 1 | Never | 3 |
2.1%
|
| 2 | Once a week | 24 |
16.6%
|
| 3 | Between 2 and 4 times a week | 42 |
29%
|
| 4 | Daily | 68 |
46.9%
|
| 5 | More than once a day | 6 |
4.1%
|
| Sysmiss | 436 |