| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3647 |
96.6%
|
| 2 | SOME DIFFICULTY | 73 |
1.9%
|
| 3 | A LOT OF DIFFICULTY | 5 |
0.1%
|
| 4 | CANNOT CONTROL BEHAVIOUR AT ALL | 4 |
0.1%
|
| 9 | NO RESPONSE | 2 |
0.1%
|
| Sysmiss | 45 |
1.2%
|