| Value | Category | Cases | |
|---|---|---|---|
| 1 | Improvement | 220 |
30.2%
|
| 2 | No change | 360 |
49.5%
|
| 3 | Deterioration | 32 |
4.4%
|
| 4 | Neither existed earlier nor existing now | 111 |
15.2%
|
| 9 | Invalid | 5 |
0.7%
|