| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 75 |
3.9%
|
| 2 | Increased | 52 |
2.7%
|
| 3 | Unchanged | 1723 |
89.6%
|
| 4 | Decreased | 20 |
1%
|
| 5 | Initially changed but has now returned to normal | 50 |
2.6%
|
| 98 | I do not know | 3 |
0.2%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 219 |