| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 915 |
64%
|
| 1 | 1. once or twice | 361 |
25.3%
|
| 2 | 2. several times | 134 |
9.4%
|
| 3 | 3. most of the time | 19 |
1.3%
|
| Sysmiss | 134 |