This analysis of age distribution will be restricted to closed populations of human females; restricted to closed populations because to consider the effects of migration would be unduly complicated; restricted to human populations because the author is a demographer rather than a biologist; and restricted to females because differences in age composition and in age at parenthood between the sexes make a combined treatment awkward. If data were equally available, a completely similar analysis could be made for males, with only one major reservation: The special effects of war mortality on males of military age would require special analysis.
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Ansley J. Coale (1957) studied this question.
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