| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1310 |
90.1%
|
| 1 | 1. once or twice | 97 |
6.7%
|
| 2 | 2. several times | 24 |
1.7%
|
| 3 | 3. most of the times | 23 |
1.6%
|
| Sysmiss | 109 |