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A Geometric Morphometric Approach to Sex Determination of the Human Adult Os Coxa

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Sex determination of the human skeleton is best assessed from the os coxa. The present study explored the possibility of using three-dimensional landmark coordinate data collected from various landmarks located over the entire bone to determine whether there were significant sex differences local to the landmarks. Thirty-six landmarks were digitized on 200 African American and European American male and female adult human os coxae. MANCOVA results show that sex and size have a significant effect on shape for both European Americans (Sex, F =17.50, d.f. = 36, 63, p > F =0.0001; Size, F =2.56, d.f. = 36, 63, p > F = 0.0022) and African Americans (Sex, F = 21.18, d.f. = 36, 63, p > F = 0.0001; Size, F = 2.59, d.f. = 36, 63, p > F = 0.0005). The discriminant analysis shows that sexing accuracy for European Americans is 98% for both males and females, 98% for African American females, and 100% for African American males.

Keywords: discriminant function analysis; forensic anthropology; forensic science; geometric morphometrics; os coxa; sex determination

Document Type: Research Article


Affiliations: 1: College of Criminal Justice, Forensic Science, Sam Houston State University, Huntsville, TX 77341-2525 2: Department of Sociology and Anthropology, North Carolina State University, Raleigh, NC 27695-8107.

Publication date: July 1, 2010


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