| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. never | 1269 |
42%
|
| 2 | 2. once | 675 |
22.3%
|
| 3 | 3. two or three times | 795 |
26.3%
|
| 4 | 4. often | 285 |
9.4%
|
| Sysmiss | 1514 |