| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3861 |
77.1%
|
| 1 | Several Days | 749 |
15%
|
| 2 | More than half the days | 213 |
4.3%
|
| 3 | Nearly every day | 108 |
2.2%
|
| 99 | Refused | 76 |
1.5%
|