| Value | Category | Cases | |
|---|---|---|---|
| 1 | No never | 6902 |
87.3%
|
| 2 | Not more than usual | 666 |
8.4%
|
| 3 | More than usual | 289 |
3.7%
|
| 4 | Much more than usual | 48 |
0.6%
|
| Sysmiss | 4 |