| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
1.2%
|
| 1 | Increased | 11 |
13.1%
|
| 2 | Remained the same | 33 |
39.3%
|
| 3 | Decreased | 39 |
46.4%
|
| Sysmiss | 275 |