| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 34 |
1.5%
|
| 2 | Increased | 154 |
6.7%
|
| 3 | Unchanged | 1583 |
68.4%
|
| 4 | Decreased | 371 |
16%
|
| 5 | Initially changed but has now returned to normal | 169 |
7.3%
|
| 98 | I do not know | 2 |
0.1%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 2 |