| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all. | 2942 |
88.7%
|
| 1 | Several days | 271 |
8.2%
|
| 2 | More than half the days | 43 |
1.3%
|
| 3 | Nearly every day | 62 |
1.9%
|
| Sysmiss | 2670 |