| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 2 |
0%
|
|
| 1 | Not at all | 15996 |
63.2%
|
| 2 | Several days | 6843 |
27%
|
| 3 | More than half the days | 394 |
1.6%
|
| 4 | Nearly every day | 2079 |
8.2%
|
| Sysmiss | 17072 |