| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 1081 |
88%
|
| 1 | Several days | 129 |
10.5%
|
| 2 | More than half the days | 16 |
1.3%
|
| 3 | Nearly every day | 2 |
0.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 1 |
0.1%
|
| Sysmiss | 27 |