| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3351 |
88.7%
|
| 2 | SOME DIFFICULTY | 307 |
8.1%
|
| 3 | A LOT OF DIFFICULTY | 52 |
1.4%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 65 |
1.7%
|