| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, no difficulty | 26264 |
96.9%
|
| 2 | yes, some | 398 |
1.5%
|
| 3 | yes, a lot | 74 |
0.3%
|
| 4 | cannot do | 364 |
1.3%
|
| Sysmiss | 473 |