| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 138 |
8%
|
| -7 | Does not apply (spontaneous) | 22 |
1.3%
|
| 1 | Increased | 32 |
1.9%
|
| 2 | Remained the Same | 1298 |
75.2%
|
| 3 | Decreased | 236 |
13.7%
|
| Sysmiss | 1 |