| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, no difficulty | 26273 |
96.2%
|
| 2 | yes, some | 637 |
2.3%
|
| 3 | yes, a lot | 106 |
0.4%
|
| 4 | cannot do | 295 |
1.1%
|
| Sysmiss | 262 |