| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 215 |
7%
|
| 2 | Increased | 394 |
12.8%
|
| 3 | Unchanged | 2145 |
69.5%
|
| 4 | Decreased | 244 |
7.9%
|
| 5 | Initially changed but has now returned to normal | 86 |
2.8%
|
| 98 | I do not know | 3 |
0.1%
|
| 99 | Refused | 1 |
0%
|
| Sysmiss | 1 |