| Value | Category | Cases | |
|---|---|---|---|
| 1 | No Difficulty | 72468 |
97.6%
|
| 2 | Some Difficulty | 1173 |
1.6%
|
| 3 | A lot of Difficulty | 371 |
0.5%
|
| 4 | Cannot do at all / Unable to do | 270 |
0.4%
|
| Sysmiss | 3 |