| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 13644 |
87.5%
|
| 2 | SOME DIFFICULTY | 1622 |
10.4%
|
| 3 | A LOT OF DIFFICULTY | 266 |
1.7%
|
| 4 | CANNOT CONTROL BEHAVIOUR AT ALL | 54 |
0.3%
|
| 9 | NO RESPONSE | 9 |
0.1%
|
| Sysmiss | 18 |