| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 42 |
3.7%
|
| 2 | Increased | 38 |
3.4%
|
| 3 | Unchanged | 993 |
88.5%
|
| 4 | Decreased | 8 |
0.7%
|
| 5 | Initially changed but has now returned to normal | 34 |
3%
|
| 98 | I do not know | 5 |
0.4%
|
| 99 | Refused | 2 |
0.2%
|
| Sysmiss | 1020 |