| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 2 |
2%
|
| 1 | Increase | 0 |
0%
|
| 2 | Remain the same | 20 |
19.8%
|
| 3 | Decrease | 79 |
78.2%
|
| Sysmiss | 52 |