| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3466 |
82.1%
|
| 2 | SOME DIFFICULTY | 199 |
4.7%
|
| 3 | A LOT OF DIFFICULTY | 33 |
0.8%
|
| 9 | NO RESPONSE | 6 |
0.1%
|
| Sysmiss | 517 |
12.2%
|