| Value | Category | Cases | |
|---|---|---|---|
| 1 | based on calendar | 207 |
84.5%
|
| 2 | based on body temperature | 4 |
1.6%
|
| 3 | based on cervical mucous | 12 |
4.9%
|
| 4 | based on body temperature and cervical mucous | 4 |
1.6%
|
| 5 | no specific system | 11 |
4.5%
|
| 6 | other | 7 |
2.9%
|
| Sysmiss | 12670 |