| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 749 |
70.5%
|
| 2 | Some | 209 |
19.7%
|
| 3 | A lot | 83 |
7.8%
|
| 4 | Completely unable | 21 |
2%
|
| Sysmiss | 24273 |