| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 1 | Much worse | 27 |
1.1%
|
| 2 | Worse | 130 |
5.4%
|
| 3 | Same | 178 |
7.4%
|
| 4 | Better | 1151 |
48%
|
| 5 | Much better | 391 |
16.3%
|
| 9 | Don't know | 521 |
21.7%
|
| 998 | refused | 0 |
0%
|