Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Discriminant analysis of mandibular measurements for the estimation of sex in a modern Brazilian sample

Full text
Author(s):
Lopez-Capp, Thais Torralbo [1] ; Rynn, Christopher [2] ; Wilkinson, Caroline [3] ; Saavedra de Paiva, Luiz Airton [4] ; Michel-Crosato, Edgard [1] ; Haye Biazevic, Maria Gabriela [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo FOUSP, Sch Dent, Community Dent Deparment, Ave Prof Lineu Prestes 2227, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Dundee, Ctr Anat & Human Identificat CAHID, Dow St, Dundee DD1 5EH - Scotland
[3] Liverpool John Moores Univ, Liverpool Sch Art & Design, Liverpool Sci Pk IC1, Liverpool, Merseyside - England
[4] Inst Teaching & Res Forens Sci IEPCF, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF LEGAL MEDICINE; v. 132, n. 3, p. 843-851, MAY 2018.
Web of Science Citations: 2
Abstract

The present study aimed to evaluate the accuracy of mandibular measurements for sex determination in a Brazilian population. The sample was composed of 100 mandibles, of which 53 were female and 47 were male, and the average age was 57.03 years. The mandible measurement protocol was composed of 15 measurements, of which six were bilateral and nine were unique. Mandibles were directly measured using a digital caliper and a protractor. The descriptive analysis of the present study revealed higher mean values for male mandibles compared to those for female mandibles with the exception of the left mandibular angle. Among the 21 measures analyzed in this group, 15 were statistically significant (p < 0.05). Univariate discriminant analyses produced a mean percentage of correct predictions that varied between 49 and 79%. The association of variables increased the percentage of correct prediction of sex to vary from 76 to 86%. The receiver operator characteristic (ROC) curve analysis indicated that the best variable for estimating sex was bigonial breadth (BGB; area under the ROC curve (AUC) = 0.764) followed by the right maximum ramus height (MRHr; AUC = 0.763). A reference table for estimating sex in a Brazilian population using mandible measurements was developed based on the ROC curve analysis. Mandibular measures provide a simple and reliable method for sex discrimination in Brazilian adults due to the sexual dimorphism revealed by analysis of the metric variables and the satisfactory results demonstrated by discriminant formulas, ROC curve analysis, and the reference table. (AU)

FAPESP's process: 14/13340-7 - Comparative analysis of the Brazilian and Scottish population for estimating sex age and ancestry: a Forensic Anthropology study
Grantee:Thais Torralbo Lopez Capp
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 11/18577-7 - Comparative study of four methods of sex estimation using the frontal bone angle: skull study in a forensic medicine service
Grantee:Maria Gabriela Haye Biazevic
Support type: Regular Research Grants
FAPESP's process: 14/23727-6 - Comparative analysis of Brazilian and Scottish population for estimating sex, ancestry and age: a forensic anthropology study
Grantee:Thais Torralbo Lopez Capp
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)