| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2992 |
83.9%
|
| 1 | Several days | 510 |
14.3%
|
| 2 | More than half the days | 53 |
1.5%
|
| 3 | Nearly every day | 10 |
0.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 1 |
0%
|
| Sysmiss | 53 |