But there was just one — major — hitch. For instance, some men are born with two or three X chromosomes, just as some women are born with a Y chromosome. Retrieved on 8 May Such trade-offs are best made as choices informed by already known sex and gender differences. This sex- and gender-informed perspective is necessitated by widespread differences in disease incidence, prevalence, and survival that have been reviewed elsewhere 2 , 26—
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Maccoby, E. Mediation analysis allowing for exposure—mediator interactions and causal interpretation: theoretical assumptions and implementation with SAS and SPSS macros. Although data to interrogate sex differences may exist in some studies, they have yet to be examined. Methylation patterns also differ between the sexes, likely influencing DNA expression over the life course 38 , As women began wearing high heels, male heels slowly became shorter and fatter as female heels grew taller and thinner. Add to this the additional risk that studies that are null in the aggregate may also report statistically significant findings exclusive to males or females. Signs , Vol.