| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. never | 1901 |
61.1%
|
| 2 | 2. once | 526 |
16.9%
|
| 3 | 3. two or three times | 498 |
16%
|
| 4 | 4. more often | 184 |
5.9%
|
| Sysmiss | 1429 |