| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 37 |
6.2%
|
| -7 | Does not apply | 425 |
71.2%
|
| 1 | Increase | 9 |
1.5%
|
| 2 | Remain the same | 42 |
7%
|
| 3 | Decrease | 84 |
14.1%
|
| Sysmiss | 104 |