title: How common is intersex? a response to Anne Fausto-Sterling.
abstract: Anne Fausto-Sterling s suggestion that the prevalence of intersex might be as high as 1.7% has attracted wide attention in both the scholarly press and the popular media. Many reviewers are not aware that this figure includes conditions which most clinicians do not recognize as intersex, such as Klinefelter syndrome, Turner syndrome, and late-onset adrenal hyperplasia. If the term intersex is to retain any meaning, the term should be restricted to those conditions in which chromosomal sex is inconsistent with phenotypic sex, or in which the phenotype is not classifiable as either male or female. Applying this more precise definition, the true prevalence of intersex is seen to be about 0.018%, almost 100 times lower than Fausto-Sterling s estimate of 1.7%.
authors.affiliation: The Montgomery Center for Research in Child and Adolescent Development, P. O. Box 108, 19710 Fisher Avenue, Suite J, Poolesville, MD 20837, USA. leonardsax@prodigy.net
authors.forename: Leonard
authors.initials: L
authors.lastname: Sax
mesh_terms: D000312:Adrenal Hyperplasia, Congenital / Q000453:epidemiology / Q000235:genetics; D001723:Birth Rate; D012734:Disorders of Sex Development / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D006801:Humans; D007713:Klinefelter Syndrome / Q000453:epidemiology / Q000235:genetics; D008297:Male; D010641:Phenotype; D015995:Prevalence; D012729:Sex Chromosome Aberrations / Q000706:statistics & numerical data; D012732:Sex Determination Analysis; D014424:Turner Syndrome / Q000453:epidemiology / Q000235:genetics