| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 57 |
0.5%
|
| 2 | yes, can do with a lot of difficulty | 39 |
0.3%
|
| 3 | yes, can do with some difficulty | 62 |
0.5%
|
| 4 | yes, can do with no difficulty | 11318 |
98.3%
|
| 8 | don't know | 42 |
0.4%
|
| Sysmiss | 33096 |