| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3327 |
66.4%
|
| 1 | Several Days | 1130 |
22.6%
|
| 2 | More than half the days | 354 |
7.1%
|
| 3 | Nearly every day | 113 |
2.3%
|
| 99 | Refused | 83 |
1.7%
|