| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
13.8%
|
| 1 | Never | 4 |
4.3%
|
| 2 | Once a week | 26 |
27.7%
|
| 3 | Between 2 and 4 times a week | 13 |
13.8%
|
| 4 | Daily | 35 |
37.2%
|
| 5 | More than once a day | 3 |
3.2%
|
| Sysmiss | 258 |