| Value | Category | Cases | |
|---|---|---|---|
| 1 | Improvement | 136 |
18.7%
|
| 2 | No change | 364 |
49.9%
|
| 3 | Deterioration | 20 |
2.7%
|
| 4 | Neither existed earlier nor existing now | 204 |
28%
|
| 9 | Invalid | 5 |
0.7%
|