| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 4201 |
83.9%
|
| 1 | Several Days | 551 |
11%
|
| 2 | More than half the days | 137 |
2.7%
|
| 3 | Nearly every day | 67 |
1.3%
|
| 99 | Refused | 51 |
1%
|