| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all well | 28 |
1.7%
|
| 2 | Not very well | 165 |
10.1%
|
| 3 | Pretty well | 318 |
19.6%
|
| 4 | Very well | 1114 |
68.5%
|
| r | 1 |
0.1%
|