| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 578 |
70.7%
|
| 1 | Several days | 193 |
23.6%
|
| 2 | 35 |
4.3%
|
|
| 3 | More than half of the days | 11 |
1.3%
|
| 4 | Nearly every day | 0 |
0%
|
| Sysmiss | 4 |