| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 530 |
40%
|
| 1 | Several days | 430 |
32.5%
|
| 2 | More than half the days | 138 |
10.4%
|
| 3 | Nearly every day | 227 |
17.1%
|
| 4 | Several days | 0 |
0%
|