| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.1%
|
| 1 | Never | 15 |
8%
|
| 2 | Once a week | 44 |
23.4%
|
| 3 | Between 2 and 4 times a week | 47 |
25%
|
| 4 | Daily | 72 |
38.3%
|
| 5 | More than once a day | 8 |
4.3%
|
| Sysmiss | 1012 |