| Value | Category | Cases | |
|---|---|---|---|
| 1 | very well | 83 |
2.5%
|
| 2 | well | 566 |
17.3%
|
| 3 | not well | 992 |
30.3%
|
| 4 | not at all | 1605 |
49%
|
| 8 | don't know | 23 |
0.7%
|
| 9 | refused | 4 |
0.1%
|
| Sysmiss | 1987 |