"The goal of the Meet the Methods series is to equip researchers and trainees with practical tips and tools from prominent researchers on integrating sex, gender and other identity factors into various fields of health research."
The peer-reviewed Gendered Innovations project from Stanford University provides these clear, critical definitions for research purposes.
FREE PDF DOWNLOAD. Offers principles for data collection, guidelines for collecting sex and gender data, recommendations for specific questions that can be used to both assess these characteristics and identify people with transgender experience and intersex traits, and recommendations of topics for further research to improve these measures.
Heidari, S., Babor, T.F., De Castro, P. et al. Sex and Gender Equity in Research: rationale for the SAGER guidelines and recommended use. Res Integr Peer Rev 1, 2 (2016). https://doi.org/10.1186/s41073-016-0007-6
Learn about the Sex and Gender Equity in Research (SAGER) Guidelines, designed to help researchers during proposals, manuscripts, and peer review evaluation, as well as the checklist to help both authors and editors evaluate sex and gender reporting in each section of a paper.