| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 20 |
0.9%
|
| 2 | Increased | 136 |
6.3%
|
| 3 | Unchanged | 1739 |
81.1%
|
| 4 | Decreased | 137 |
6.4%
|
| 5 | Initially changed but has now returned to normal | 113 |
5.3%
|
| 98 | I do not know | 0 |
0%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 170 |