| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 31 |
1.6%
|
| 2 | Increased | 173 |
8.8%
|
| 3 | Unchanged | 1668 |
84.8%
|
| 4 | Decreased | 67 |
3.4%
|
| 5 | Initially changed but has now returned to normal | 19 |
1%
|
| 98 | I do not know | 7 |
0.4%
|
| 99 | Refused | 3 |
0.2%
|
| Sysmiss | 64 |