| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 1520 |
75.9%
|
| 1 | only once | 97 |
4.8%
|
| 2 | sometimes | 236 |
11.8%
|
| 3 | often | 149 |
7.4%
|
| Sysmiss | 2 |