| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2829 |
85.6%
|
| 1 | Several days | 338 |
10.2%
|
| 2 | More than half the days | 74 |
2.2%
|
| 3 | Nearly every day | 64 |
1.9%
|
| Sysmiss | 3725 |