| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 283 |
13.8%
|
| 2 | Increased | 155 |
7.6%
|
| 3 | Unchanged | 1540 |
75.3%
|
| 4 | Decreased | 61 |
3%
|
| 5 | Initially changed but has now returned to normal | 2 |
0.1%
|
| 98 | I do not know | 0 |
0%
|
| 99 | Refused | 3 |
0.1%
|
| Sysmiss | 223 |