| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 1 |
0%
|
|
| 1 | Not at all | 77675 |
68.5%
|
| 2 | Several days | 24957 |
22%
|
| 3 | More than half the days | 4279 |
3.8%
|
| 4 | Nearly every day | 6554 |
5.8%
|
| Sysmiss | 35814 |