| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 45 |
2.1%
|
| 2 | Increased | 167 |
7.7%
|
| 3 | Unchanged | 1603 |
73.9%
|
| 4 | Decreased | 224 |
10.3%
|
| 5 | Initially changed but has now returned to normal | 129 |
5.9%
|
| 98 | I do not know | 1 |
0%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 146 |