| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very well | 1284 |
2.8%
|
| 2 | Well | 3900 |
8.5%
|
| 3 | Less | 3469 |
7.6%
|
| 4 | Don't know | 37127 |
81.1%
|
| Sysmiss | 24644 |