| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 485 |
27.6%
|
| -7 | DOES NOT APPLY | 439 |
25%
|
| 1 | Worse | 50 |
2.8%
|
| 2 | Same | 738 |
42%
|
| 3 | Better | 47 |
2.7%
|