| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Never | 2 |
1.9%
|
| 2 | Once a week | 46 |
43%
|
| 3 | Between 2 and 4 times a week | 20 |
18.7%
|
| 4 | Daily | 34 |
31.8%
|
| 5 | More than once a day | 5 |
4.7%
|
| Sysmiss | 425 |