| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 602 |
57.4%
|
| 2 | SOME DIFFICULTY | 38 |
3.6%
|
| 3 | A LOT OF DIFFICULTY | 5 |
0.5%
|
| 9 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 402 |
38.4%
|