| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3979 |
79.5%
|
| 1 | Several Days | 653 |
13%
|
| 2 | More than half the days | 236 |
4.7%
|
| 3 | Nearly every day | 83 |
1.7%
|
| 99 | Refused | 56 |
1.1%
|