| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all. | 3112 |
93.8%
|
| 1 | Several days | 150 |
4.5%
|
| 2 | More than half the days | 15 |
0.5%
|
| 3 | Nearly every day | 39 |
1.2%
|
| Sysmiss | 2672 |