| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 42 |
4.3%
|
| 2 | Increased | 36 |
3.7%
|
| 3 | Unchanged | 839 |
85.4%
|
| 4 | Decreased | 18 |
1.8%
|
| 5 | Initially changed but has now returned to normal | 46 |
4.7%
|
| 98 | I do not know | 2 |
0.2%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 1159 |