| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all well | 34 |
2.1%
|
| 2 | Not very well | 257 |
15.8%
|
| 3 | Pretty well | 478 |
29.4%
|
| 4 | Very well | 856 |
52.6%
|
| r | 1 |
0.1%
|