| Value | Category | Cases | |
|---|---|---|---|
| 1 | The last 3 months | 175 |
28.1%
|
| 2 | The last 6 months | 115 |
18.5%
|
| 3 | The last 12 months | 294 |
47.2%
|
| 98 | dk | 39 |
6.3%
|
| Sysmiss | 19377 |