Women code better than men, unless we know women wrote it
theguardian.com
theguardian.com
Gender differences and bias in open source: Pull request acceptance of women versus men
https://peerj.com/preprints/1733/
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).