| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don’t know (SPONTANEOUS) | 3 |
0.6%
|
| 1 | Increased | 67 |
14.2%
|
| 2 | Decreased | 215 |
45.5%
|
| 3 | Remained the same | 188 |
39.7%
|
| Sysmiss | 198 |