| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very well | 1679 |
4.7%
|
| 2 | Well | 3576 |
10%
|
| 3 | Less | 2743 |
7.7%
|
| 4 | Don't know | 27714 |
77.6%
|
| Sysmiss | 34460 |