| Value | Category | Cases | |
|---|---|---|---|
| 1 | No never | 2465 |
31.2%
|
| 2 | Not more than usual | 2556 |
32.3%
|
| 3 | More than usual | 2425 |
30.7%
|
| 4 | Much more than usual | 460 |
5.8%
|
| Sysmiss | 3 |