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The number of births where the baby is intersex has been reported differently depending on who reports and which definition of intersex is used. Anne Fausto-Sterling and her co-authors suggest that the prevalence of ″nondimorphic sexual development″ might be as high as 1.7%. Leonard Sax says that this figure includes conditions which most clinicians do not recognize as intersex, and that in those ″conditions in which chromosomal sex is inconsistent with phenotypic sex, or in which the phenotype is not classifiable as either male or female", the prevalence of intersex is about 0.018%.