ABSTRACT
Data on sex has been collected by human scientists, social scientists, and public bodies for as long as data collection has existed. Sex is recognised as a fundamental demographic variable, which affects both health and a wide range of social and economic outcomes. Yet, in recent years, there has been pressure on public bodies to stop collecting data on sex, on the grounds that acknowledging sex denies people’s inner “gender identity”, which may clash with their sex. This chapter explores the consequences of the loss of data on sex in a number of areas, including the gender pay gap, crime and prisons, and understanding trends and outcomes for the trans population. In conclusion, the authors argue that accurate data on sex is essential for the social sciences and to tackle sexism. Finally, the authors discuss the ethical implications of failing to collect data on sex.
