| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 164 |
7%
|
| 2 | Increased | 184 |
7.9%
|
| 3 | Unchanged | 1719 |
73.4%
|
| 4 | Decreased | 169 |
7.2%
|
| 5 | Initially changed but has now returned to normal | 95 |
4.1%
|
| 98 | I do not know | 8 |
0.3%
|
| 99 | Refused | 2 |
0.1%
|
| Sysmiss | 23 |