| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.5%
|
| 1 | Never | 3 |
2.3%
|
| 2 | Once a week | 39 |
30%
|
| 3 | Between 2 and 4 times a week | 14 |
10.8%
|
| 4 | Daily | 66 |
50.8%
|
| 5 | More than once a day | 6 |
4.6%
|
| Sysmiss | 230 |