| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than usual | 9 |
1%
|
| 2 | Same as usual | 128 |
14.8%
|
| 3 | Less than usual | 160 |
18.6%
|
| 4 | Did not work | 565 |
65.5%
|
| Sysmiss | 1346 |