| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1366 |
95.6%
|
| 1 | 1. once or twice | 36 |
2.5%
|
| 2 | 2. several times | 5 |
0.3%
|
| 3 | 3. most of the time | 22 |
1.5%
|
| Sysmiss | 134 |