The good news is there is already a team of actual interdisciplinary experts putting together detailed advice around data collection on sex and gender, informed by medical science as well as feminist and trans perspectives. They are the MESSAGE project and you can learn more here:
Medical Science Sex & Gender Equity
The MESSAGE (Medical Science Sex and Gender Equity) project aims to improve the integration of sex and gender considerations across data collection, analysis and reporting in biomedical, health and ca...
messageproject.co.uk