| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1326 |
92.8%
|
| 1 | 1. once or twice | 75 |
5.2%
|
| 2 | 2. several times | 16 |
1.1%
|
| 3 | 3. most of the time | 12 |
0.8%
|
| Sysmiss | 134 |