| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 83 |
5.7%
|
| 2 | Increased | 123 |
8.5%
|
| 3 | Unchanged | 1003 |
69%
|
| 4 | Decreased | 168 |
11.6%
|
| 5 | Initially changed but has now returned to normal | 56 |
3.9%
|
| 98 | I do not know | 17 |
1.2%
|
| 99 | Refused | 3 |
0.2%
|
| Sysmiss | 911 |