| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, no difficulty | 26705 |
97.8%
|
| 2 | yes, some | 318 |
1.2%
|
| 3 | yes, a lot | 52 |
0.2%
|
| 4 | cannot do | 225 |
0.8%
|
| Sysmiss | 273 |