| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Never | 3 |
10.7%
|
| 2 | Once a week | 8 |
28.6%
|
| 3 | Between 2 and 4 times a week | 12 |
42.9%
|
| 4 | Daily | 4 |
14.3%
|
| 5 | More than once a day | 1 |
3.6%
|
| Sysmiss | 92 |