| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
0.8%
|
| 1 | increased | 112 |
92.6%
|
| 2 | remained the same | 6 |
5%
|
| 3 | decreased | 2 |
1.7%
|
| Sysmiss | 1874 |