| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Never | 2 |
2.3%
|
| 2 | Once a week | 29 |
33%
|
| 3 | Between 2 and 4 times a week | 27 |
30.7%
|
| 4 | Daily | 28 |
31.8%
|
| 5 | More than once a day | 2 |
2.3%
|
| Sysmiss | 272 |