| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 13 |
0.1%
|
| 0 | Not at all well | 3723 |
14.7%
|
| 1 | Not very well | 6825 |
26.9%
|
| 2 | Well | 7545 |
29.7%
|
| 3 | Very well | 4094 |
16.1%
|
| 9 | Don't know | 3197 |
12.6%
|
| 998 | Refused | 0 |
0%
|