| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
24.5%
|
| 1 | Never | 9 |
9.6%
|
| 2 | Once a week | 33 |
35.1%
|
| 3 | Between 2 and 4 times a week | 16 |
17%
|
| 4 | Daily | 13 |
13.8%
|
| 5 | More than once a day | 0 |
0%
|
| Sysmiss | 258 |