| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very well | 134 |
4.2%
|
| 2 | Well | 663 |
20.9%
|
| 3 | Not well | 1104 |
34.7%
|
| 4 | Not at all | 1257 |
39.5%
|
| 8 | Don't know | 15 |
0.5%
|
| 9 | Refused | 6 |
0.2%
|
| Sysmiss | 1597 |