| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 1 | Much Worse | 18 |
1.5%
|
| 2 | Worse | 112 |
9.3%
|
| 3 | Same | 203 |
16.9%
|
| 4 | Better | 520 |
43.3%
|
| 5 | Much Better | 139 |
11.6%
|
| 9 | Don't know | 207 |
17.3%
|
| 998 | Refused | 0 |
0%
|