| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes, always | 894 |
13.8%
|
| 2 | yes, sometimes | 279 |
4.3%
|
| 3 | no | 282 |
4.3%
|
| 4 | not applicable | 2186 | |
| Sysmiss | 2859 |