Bidimensional Data Allow for Better Age Estimation on Immature Specimens than Unidimensional Data: A Preliminary Study on the Ilium. Issue 2 (16th November 2015)

• Record Type: Journal Article
• Authors: Daumas, Mathilde; Chaumoître, Kathia; Adalian, Pascal; Marchal, François
• Is Part Of: Journal of forensic sciences. Volume 61:Issue 2(2016)
• Page Start: 394
• Page End: 401
• Publication Date: 2015-11-16
• Subjects: forensic science -- forensic anthropology -- age estimation -- juvenile -- ilium -- methodology; Medical jurisprudence -- Periodicals; Forensic sciences -- Periodicals; Forensic Medicine -- Periodicals; Gerechtelijke geneeskunde; Gerechtelijke chemie; Gerechtelijke psychiatrie; 363.2505
• DOI: 10.1111/1556-4029.12969
• Languages: English
• ISSNs: 0022-1198

Abstract

Abstract: Most biometric age estimation methods used in anthropological and forensic science for juveniles are based on unidimensional measurements (length or width). Here, a new method using bidimensional data was tested. A 3D morphometric analysis was performed on 108 CT scans of ilium bone of juveniles (from 20 gestational weeks to 12 years old). The sample was divided into training and validation groups. Best predictors were determined by comparing the efficiency of each variable (length, width, area, and module: a product of length and width). We established linear and polynomial regressions for each parameter for both sides. Applying the equations to the validation sample showed no significant difference between real and predicted ages. For age estimation, the area and module parameters yielded better results than unidimensional measurements. The results from this preliminary study were highly conclusive, and it would be interesting to extend the work, covering larger samples, and other bones.