| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Week | 15 |
8.1%
|
| 3 | 3. Month | 81 |
43.8%
|
| 5 | 88 |
47.6%
|
|
| 9 | 9. Missing | 1 |
0.5%
|
| Sysmiss | 60 |