| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
12.3%
|
| 1 | Never | 24 |
36.9%
|
| 2 | Once a week | 24 |
36.9%
|
| 3 | Between 2 and 4 times a week | 6 |
9.2%
|
| 4 | Daily | 3 |
4.6%
|
| 5 | More than once a day | 0 |
0%
|
| Sysmiss | 177 |