| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 6345 |
45.7%
|
| 2 | Yes, usually | 4250 |
30.6%
|
| 3 | Yes, sometimes | 2573 |
18.5%
|
| 4 | No | 714 |
5.1%
|
| Sysmiss | 28130 |