| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 104 |
3.6%
|
| 2 | Increased | 311 |
10.8%
|
| 3 | Unchanged | 2216 |
76.6%
|
| 4 | Decreased | 185 |
6.4%
|
| 5 | Initially changed but has now returned to normal | 73 |
2.5%
|
| 98 | I do not know | 2 |
0.1%
|
| 99 | Refused | 1 |
0%
|
| Sysmiss | 197 |