| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 0 |
0%
|
| 2 | yes, can do with a lot of difficulty | 6 |
2.6%
|
| 3 | yes, can do with some difficulty | 7 |
3.1%
|
| 4 | yes, can do with no difficulty | 215 |
94.3%
|
| 8 | don't know | 0 |
0%
|
| Sysmiss | 44386 |