| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3710 |
74.1%
|
| 1 | Several Days | 869 |
17.4%
|
| 2 | More than half the days | 259 |
5.2%
|
| 3 | Nearly every day | 94 |
1.9%
|
| 99 | Refused | 75 |
1.5%
|