| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 1830 |
91.4%
|
| 1 | only once | 80 |
4%
|
| 2 | sometimes | 65 |
3.2%
|
| 3 | often | 27 |
1.3%
|
| Sysmiss | 2 |