Hello @cfc1001001cfc and welcome to the Help forum. Speaking as a fellow user, Fitbit doesn't seem to be in the habit of announcing results of its studies like this. For example, I participated in the Fitbit Heart Study, yet never saw any results or feedback. I recommend these three sites to keep up with all things Fitbit: the Fitbit Blog, Fitbit Press Releases and 9to5 google.
Laurie | Maryland
Sense 2, Luxe, Aria 2 | iOS | Mac OS
Take a look at the Fitbit help site for further assistance and information.