Link to the mentioned study:<p><i>Gender differences and bias in open source: Pull request acceptance of women versus men</i><p><a href="https://peerj.com/preprints/1733/" rel="nofollow">https://peerj.com/preprints/1733/</a><p>It's worth reading the study as they address some potential hypotheses. e.g. survivorship bias (pg. 9), being singled out as a woman (pg. 15).