| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3074 |
86.2%
|
| 1 | Several days | 400 |
11.2%
|
| 2 | More than half the days | 63 |
1.8%
|
| 3 | Nearly every day | 24 |
0.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 5 |
0.1%
|
| Sysmiss | 53 |