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Table 1 Definitions of sex and gender

From: Twenty years and still counting: including women as participants and studying sex and gender in biomedical research

The Institute of Medicine’s Committee on Understanding the Biology of Sex and Gender Differences provided these working definitions [8]
Sex “The classification of living things, generally as male or female according to their reproductive organs and functions assigned by chromosomal complement.”
Gender “A person’s self-representation as male or female, or how that person is responded to by social institutions based on the individual’s gender presentation. Gender is rooted in biology and shaped by environment and experience.”