| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 8 |
2.9%
|
| 2 | Yes, sometimes | 6 |
2.2%
|
| 3 | Only when feeling sick | 133 |
48%
|
| 4 | No | 130 |
46.9%
|
| Sysmiss | 556 |