| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2753 |
92.4%
|
| 1 | Several days | 154 |
5.2%
|
| 2 | More than half the days | 27 |
0.9%
|
| 3 | Nearly every day | 46 |
1.5%
|
| Sysmiss | 4041 |