Also, read the next sentence "The data are still being analyzed and have not yet been submitted to a journal for peer review, but the researchers expect to publish later this year".
And a little bit later "But it’s important to remember that the sample sizes are small.”
Also, read the next sentence "The data are still being analyzed and have not yet been submitted to a journal for peer review, but the researchers expect to publish later this year".
And a little bit later "But it’s important to remember that the sample sizes are small.”
So, it's not even a conclusive result yet.