| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 68 |
4.4%
|
| 2 | Increased | 263 |
16.8%
|
| 3 | Unchanged | 1032 |
66%
|
| 4 | Decreased | 96 |
6.1%
|
| 5 | Initially changed but has now returned to normal | 61 |
3.9%
|
| 98 | I do not know | 42 |
2.7%
|
| 99 | Refused | 1 |
0.1%
|
| Sysmiss | 801 |