| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 39 |
0.7%
|
| 2 | yes, can do with a lot of difficulty | 16 |
0.3%
|
| 3 | yes, can do with some difficulty | 21 |
0.4%
|
| 4 | yes, can do with no difficulty | 5573 |
97.3%
|
| 8 | don't know | 78 |
1.4%
|
| Sysmiss | 38887 |