| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 1136 |
92.4%
|
| 1 | Several days | 70 |
5.7%
|
| 2 | More than half the days | 19 |
1.5%
|
| 3 | Nearly every day | 3 |
0.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 1 |
0.1%
|
| Sysmiss | 27 |