| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 138 |
8%
|
| -7 | Does not apply (spontaneous) | 19 |
1.1%
|
| 1 | Increased | 28 |
1.6%
|
| 2 | Remained the Same | 1287 |
74.6%
|
| 3 | Decreased | 254 |
14.7%
|
| Sysmiss | 1 |