| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. never | 1618 |
60.6%
|
| 2 | 2. once | 506 |
19%
|
| 3 | 3. two or three times | 292 |
10.9%
|
| 4 | 4. often | 252 |
9.4%
|
| Sysmiss | 1870 |