| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
9.7%
|
| 1 | Never | 43 |
29.7%
|
| 2 | Once a week | 48 |
33.1%
|
| 3 | Between 2 and 4 times a week | 18 |
12.4%
|
| 4 | Daily | 22 |
15.2%
|
| 5 | More than once a day | 0 |
0%
|
| Sysmiss | 436 |