| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2789 |
55.7%
|
| 1 | Several Days | 1567 |
31.3%
|
| 2 | More than half the days | 395 |
7.9%
|
| 3 | Nearly every day | 187 |
3.7%
|
| 99 | Refused | 69 |
1.4%
|