| Value | Category | Cases | |
|---|---|---|---|
| 1 | based on calendar | 418 |
87.3%
|
| 2 | based on body temperature | 10 |
2.1%
|
| 3 | based on cervical mucous | 22 |
4.6%
|
| 4 | based on body temperature and cervical mucous | 4 |
0.8%
|
| 5 | no specific system | 15 |
3.1%
|
| 6 | other | 10 |
2.1%
|
| Sysmiss | 38239 |