| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 1 |
0%
|
|
| 1 | Not at all | 78299 |
69%
|
| 2 | Several days | 24735 |
21.8%
|
| 3 | More than half the days | 3751 |
3.3%
|
| 4 | Nearly every day | 6669 |
5.9%
|
| Sysmiss | 35825 |