| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Never | 7 |
5.9%
|
| 2 | Once a week | 44 |
37.3%
|
| 3 | Between 2 and 4 times a week | 28 |
23.7%
|
| 4 | Daily | 34 |
28.8%
|
| 5 | More than once a day | 5 |
4.2%
|
| Sysmiss | 240 |