I am suspicious of your study. I think this is one of those cases again where we have to go with the anecdotal evidence we're actually seeing on the ground as opposed to what a bunch of out-of-the-loop, liberal scientific snobs think.
Holy fuck, foids really are slaves to their hormones. Imagine investing 9 years with someone just for them to up and dump you out of nowhere because her hormones told her to when she got off birth control.