| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 22 |
6%
|
| 1 | Increase | 87 |
23.9%
|
| 2 | Decrease | 187 |
51.4%
|
| 3 | Stay the same | 68 |
18.7%
|
| Sysmiss | 1 |