| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all well | 15 |
0.9%
|
| 2 | Not very well | 140 |
8.6%
|
| 3 | Pretty well | 377 |
23.2%
|
| 4 | Very well | 1092 |
67.2%
|
| r | 2 |
0.1%
|