| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
1.2%
|
| 1 | Never | 71 |
21.8%
|
| 2 | Once a week | 172 |
52.9%
|
| 3 | Between 2 and 4 times a week | 43 |
13.2%
|
| 4 | Daily | 34 |
10.5%
|
| 5 | More than once a day | 1 |
0.3%
|
| Sysmiss | 1744 |