| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2806 |
84.9%
|
| 1 | Several days | 352 |
10.7%
|
| 2 | More than half the days | 91 |
2.8%
|
| 3 | Nearly every day | 56 |
1.7%
|
| Sysmiss | 3725 |