| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
11.8%
|
| -7 | Does not apply (spontaneous) | 7 |
13.7%
|
| 1 | Increase | 0 |
0%
|
| 2 | Remain the same | 8 |
15.7%
|
| 3 | Decrease | 30 |
58.8%
|
| Sysmiss | 99 |