| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 6840 |
76.3%
|
| 2 | SOME DIFFICULTY | 1667 |
18.6%
|
| 3 | A LOT OF DIFFICULTY | 406 |
4.5%
|
| 4 | CANNOT CONTROL BEHAVIOUR AT ALL | 33 |
0.4%
|
| Sysmiss | 19 |
0.2%
|