| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.5%
|
| 1 | Never | 2 |
1.5%
|
| 2 | Once a week | 26 |
19.1%
|
| 3 | Between 2 and 4 times a week | 13 |
9.6%
|
| 4 | Daily | 83 |
61%
|
| 5 | More than once a day | 10 |
7.4%
|
| Sysmiss | 241 |