Lynch, JJ and Cross, P and Heaton, V (2017) Sexual Dimorphism of the First Rib: A Comparative Approach Using Metric and Geometric Morphometric Analyses. Journal of Forensic Sciences. n/a - n/a. ISSN 1556-4029

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Abstract

This research investigated the sexual dimorphism of the first human rib using geometric morphometric and metric approaches on a sample of 285 specimens containing European Americans and African Americans from the Hamann-Todd collection. Metric measurements were investigated for sexual dimorphism and ancestral differences using univariate statistics. Four type II landmarks and 40 sliding semi-landmarks were placed outlining the dorsal and ventral curvatures of the ribs. Landmark data were processed using Generalized Procrustes analyses with Procrustes distance sliding, and the subsequent coordinates were investigated for sexual dimorphism and ancestral differences using Procrustes ANOVAs. Both geometric morphometric and metric data were analyzed using cross-validated discriminant function analyses to test the hypothesis that variables from both approaches can be combined to increase sex classification rate. European Americans had sex correctly classified as high as 88.05% and African Americans as high as 70.86% using a combination of metric and geometric morphometric variables.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Wiley at http://dx.doi.org/10.1111/1556-4029.13421 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: forensic science, forensic anthropology, geometric morphometrics, first rib, shape analysis, sexual dimorphism, ancestry, discriminant function analysis, sliding semi-landmarks, landmark error
Subjects: R Medicine > RA Public aspects of medicine > RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 02 May 2017 14:05
Last Modified: 02 May 2017 14:13
URI: http://eprints.keele.ac.uk/id/eprint/3338

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