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Published in: International Journal of Legal Medicine 2/2015

01-03-2015 | Original Article

Sex prediction from the femur and hip bone using a sample of CT images from a Spanish population

Authors: Ana Clavero, Miquel Salicrú, Daniel Turbón

Published in: International Journal of Legal Medicine | Issue 2/2015

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Abstract

Sex estimation and the analysis of sexual dimorphism is an essential part of forensic and archaeological studies of skeletons. However, osteologists often have to rely on single measurements, such as femoral head diameters, to estimate sex, especially when skeletons are incomplete. We have obtained a sex-prediction model based on CT images by applying the logistic regression technique to the measurements obtained for the proximal femoral epiphyses and coxal. Nine variables for 114 Spaniards (58 females and 56 males) of known age and sex from a region close to Madrid have been studied. The prediction equation obtained using these nine variables correctly classifies 99.1 % of these individuals. Reducing the equation to the three most explanatory variables (VDH, HDH and MIB) resulted in the correct classification of 98.3 %. These findings suggest that this procedure is highly effective for sex prediction. However, a lack of expertise may produce biases in the measurements obtained from CT images. Moreover, these equations are only most effective for the population for which they were calculated as human growth and body size are sensitive to nutritional variations, environmental stress and the so-called secular trend.
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Metadata
Title
Sex prediction from the femur and hip bone using a sample of CT images from a Spanish population
Authors
Ana Clavero
Miquel Salicrú
Daniel Turbón
Publication date
01-03-2015
Publisher
Springer Berlin Heidelberg
Published in
International Journal of Legal Medicine / Issue 2/2015
Print ISSN: 0937-9827
Electronic ISSN: 1437-1596
DOI
https://doi.org/10.1007/s00414-014-1069-y

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