| Value | Category | Cases | |
|---|---|---|---|
| 1 | very well | 242 |
6.9%
|
| 2 | fairly well | 1104 |
31.6%
|
| 3 | not very well | 925 |
26.5%
|
| 4 | not at all well | 668 |
19.1%
|
| 5 | don't know | 502 |
14.4%
|
| 6 | refused | 52 |
1.5%
|