| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 150 |
5.5%
|
| 2 | Increased | 194 |
7.1%
|
| 3 | Unchanged | 1854 |
67.6%
|
| 4 | Decreased | 430 |
15.7%
|
| 5 | Initially changed but has now returned to normal | 109 |
4%
|
| 98 | I do not know | 4 |
0.1%
|
| 99 | Refused | 2 |
0.1%
|
| Sysmiss | 346 |