| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 476 |
27.1%
|
| -7 | DOES NOT APPLY | 433 |
24.6%
|
| 1 | Worse | 53 |
3%
|
| 2 | Same | 758 |
43.1%
|
| 3 | Better | 39 |
2.2%
|