| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
4.1%
|
| 1 | Never | 10 |
6.9%
|
| 2 | Once a week | 31 |
21.4%
|
| 3 | Between 2 and 4 times a week | 26 |
17.9%
|
| 4 | Daily | 65 |
44.8%
|
| 5 | More than once a day | 7 |
4.8%
|
| Sysmiss | 436 |