| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 149 |
6.4%
|
| 2 | Increased | 271 |
11.6%
|
| 3 | Unchanged | 1052 |
44.9%
|
| 4 | Decreased | 748 |
31.9%
|
| 5 | Initially changed but has now returned to normal | 117 |
5%
|
| 98 | I do not know | 6 |
0.3%
|
| 99 | Refused | 2 |
0.1%
|
| Sysmiss | 19 |