The applicability of the Baudoin Index for sex estimation in Brazilian skulls / A aplicabilidade do Índice Baudoin para estimativa de sexo em crânios Brasileiros

Maria Izabel Cardoso Bento, Ana Carolina de Melo Soares, Evelyne Pessoa Soriano, Marcus Vitor Diniz de Carvalho, Antonio Azoubel Antunes, Reginaldo Inojosa Carneiro Campello, Patrícia Moreira Rabello, Larissa Chaves Cardoso Fernandes


Introduction: The Baudoin Index (BI) is a human identification method for sex estimation based on occipital condyle measures. Objective: To investigate the applicability of the BI for sex estimation in a Brazilian sample. Material and Method: This was a blind cross-sectional study with 209 skulls from the Center for Studies in Forensic Anthropology, Pernambuco School of Dentistry, University of Pernambuco (CEAF / FOP / UPE). The right and left occipital condyles were measured for width and length using a digital caliper. Subsequently, the BI formula was applied to the measurements for classification of sex. The data were analyzed descriptively and by Student’s t test, Mann Whitney test, and Pearson’s Chi square, considering a 5% significance level. Results: The occipital condyle measures showed significant sex-related differences (P < 0.05), except for the width of the right occipital condyle (P = 0.376). The agreement rates of the BI in males (38%, right side; 29.6%, left side) were lower than those in females (59.4%, right side; 52.5%, left side). Conclusion: The Baudoin Index did not show accurate sex estimates in the Brazilian sample of skulls analyzed herein. Thus, this index is not suitable for estimating sex in this population.


Forensic Anthropology, Forensic Dentistry, Skull, Skull Base, Sex.


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