| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Never | 3 |
2.1%
|
| 2 | Once a week | 37 |
25.9%
|
| 3 | Between 2 and 4 times a week | 38 |
26.6%
|
| 4 | Daily | 46 |
32.2%
|
| 5 | More than once a day | 19 |
13.3%
|
| Sysmiss | 218 |