| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 1 | Much worse | 36 |
1.5%
|
| 2 | Worse | 151 |
6.3%
|
| 3 | Same | 275 |
11.5%
|
| 4 | Better | 1072 |
44.7%
|
| 5 | Much better | 227 |
9.5%
|
| 9 | Don't know | 637 |
26.6%
|
| 998 | refused | 0 |
0%
|