| Value | Category | Cases | |
|---|---|---|---|
| 1 | No never | 2626 |
33.2%
|
| 2 | Not more than usual | 3125 |
39.5%
|
| 3 | More than usual | 1811 |
22.9%
|
| 4 | Much more than usual | 343 |
4.3%
|
| Sysmiss | 4 |