| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 2515 |
84.4%
|
| 1 | Several days | 334 |
11.2%
|
| 2 | More than half the days | 71 |
2.4%
|
| 3 | Nearly every day | 61 |
2%
|
| Sysmiss | 4040 |