2WW Nerd Question on Fertility Friend studies/stats

Does anyone know if FF actually publishes their statistical studies or just the snapshot conclusions.

In particular, this one about implant dips has peaked my interest during 2WW:
https://www.fertilityfriend.com/Faqs/Implantation-dip-study.html

The piece of info that I'm missing is how the initial breakdown of the sample: i.e. what proportion of the total sample were pregnancy vs. non-pregnancy. With this info, I can calculate a conditional probability of being pregnant given that the chart has shown an implant dip.

For example: If half their sample was pregnant, then based on that sample, a person who's chart shows an implant dip has a 67.65% chance of being pregnant.

If the sample was split 25/75 for pregnant/not pregnant, then the same person has only a 41.07% chance.

Any thoughts or ideas?