| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1623 |
55.7%
|
| 2 | SOME DIFFICULTY | 335 |
11.5%
|
| 3 | A LOT OF DIFFICULTY | 12 |
0.4%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 943 |
32.3%
|