| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all. | 2925 |
88.2%
|
| 1 | Several days | 230 |
6.9%
|
| 2 | More than half the days | 58 |
1.7%
|
| 3 | Nearly every day | 105 |
3.2%
|
| Sysmiss | 2670 |