| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 13 |
0.2%
|
| 2 | yes, can do with a lot of difficulty | 40 |
0.7%
|
| 3 | yes, can do with some difficulty | 106 |
1.9%
|
| 4 | yes, can do with no difficulty | 5562 |
97.1%
|
| 8 | don't know | 6 |
0.1%
|
| Sysmiss | 38887 |