| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 473 |
31.1%
|
| 1 | 1. once or twice | 639 |
42.1%
|
| 2 | 2. several times | 197 |
13%
|
| 3 | 3. most of the times | 210 |
13.8%
|
| Sysmiss | 44 |