| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 2 |
0%
|
|
| 1 | Not at all | 16630 |
65.7%
|
| 2 | Several days | 6138 |
24.2%
|
| 3 | More than half the days | 206 |
0.8%
|
| 4 | Nearly every day | 2338 |
9.2%
|
| Sysmiss | 17072 |