| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Increased | 33 |
73.3%
|
| 2 | Decreased | 2 |
4.4%
|
| 3 | Stayed the same | 10 |
22.2%
|
| Sysmiss | 3730 |