This could be a case of https://en.wikipedia.org/wiki/Post_hoc_ergo_propter_hoc https://en.wikipedia.org/wiki/Post_hoc_ergo_propter_hoc but I assume the data re

This could be a case of https://en.wikipedia.org/wiki/Post_hoc_ergo_propter_hoc https://en.wikipedia.org/wiki/Post_hoc_ergo_propter_hoc but I assume the data researchers know the possibility as well and wouldn't publish unless they could defend the counter-argument of "How do you know the two are related". I'm not saying that we should go out and let there be a McSluts on every corner, but this sort of data brings to light interesting ripple effects of decriminalization.