| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3%
|
| 1 | Never | 45 |
26.9%
|
| 2 | Once a week | 71 |
42.5%
|
| 3 | Between 2 and 4 times a week | 25 |
15%
|
| 4 | Daily | 21 |
12.6%
|
| 5 | More than once a day | 0 |
0%
|
| Sysmiss | 237 |