| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all well | 21 |
1.3%
|
| 2 | Not very well | 160 |
9.8%
|
| 3 | Pretty well | 366 |
22.5%
|
| 4 | Very well | 1078 |
66.3%
|
| r | 1 |
0.1%
|