| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 1668 |
79.7%
|
| 1 | Several days | 225 |
10.8%
|
| 2 | More than half the days | 51 |
2.4%
|
| 3 | Nearly every day | 149 |
7.1%
|
| Sysmiss | 1506 |