| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
2.7%
|
| 1 | Never | 50 |
26.6%
|
| 2 | Once a week | 87 |
46.3%
|
| 3 | Between 2 and 4 times a week | 29 |
15.4%
|
| 4 | Daily | 15 |
8%
|
| 5 | More than once a day | 2 |
1.1%
|
| Sysmiss | 1012 |