| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.7%
|
| 1 | Never | 2 |
3.4%
|
| 2 | Once a week | 16 |
27.1%
|
| 3 | Between 2 and 4 times a week | 11 |
18.6%
|
| 4 | Daily | 29 |
49.2%
|
| 5 | More than once a day | 0 |
0%
|
| Sysmiss | 181 |