| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 19 |
1.7%
|
| 2 | Increased | 132 |
11.8%
|
| 3 | Unchanged | 906 |
80.7%
|
| 4 | Decreased | 21 |
1.9%
|
| 5 | Initially changed but has now returned to normal | 9 |
0.8%
|
| 98 | I do not know | 7 |
0.6%
|
| 99 | Refused | 28 |
2.5%
|
| Sysmiss | 910 |