| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 32 |
1.6%
|
| 2 | Increased | 343 |
16.9%
|
| 3 | Unchanged | 1573 |
77.4%
|
| 4 | Decreased | 57 |
2.8%
|
| 5 | Initially changed but has now returned to normal | 23 |
1.1%
|
| 98 | I do not know | 2 |
0.1%
|
| 99 | Refused | 1 |
0%
|
| Sysmiss | 1 |