| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes, always | 1592 |
24.5%
|
| 2 | yes, sometimes | 725 |
11.2%
|
| 3 | no | 685 |
10.5%
|
| 4 | not applicable | 559 | |
| Sysmiss | 2939 |