| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 6763 |
86.4%
|
| 2 | SOME DIFFICULTY | 950 |
12.1%
|
| 3 | A LOT OF DIFFICULTY | 61 |
0.8%
|
| 4 | CANNOT CONTROL BEHAVIOUR AT ALL | 16 |
0.2%
|
| Sysmiss | 34 |
0.4%
|