| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 15606 |
89.8%
|
| 2 | SOME DIFFICULTY | 1407 |
8.1%
|
| 3 | A LOT OF DIFFICULTY | 306 |
1.8%
|
| 4 | CANNOT CONTROL BEHAVIOUR AT ALL | 34 |
0.2%
|
| 9 | NO RESPONSE | 23 |
0.1%
|
| Sysmiss | 168 |