Beta
292551

Verification of the applicability of auricular parameters in differentiation between adult Egyptians and Malaysians

Article

Last updated: 23 Dec 2024

Subjects

-

Tags

-

Abstract

Background: External ear morphoscopic and morphometric characteristics are valuable in clinical fields. In forensic practice, auricular parameters proved to be sexually dimorphic. However, the role of the external ear in ethnic determination gained limited attention. Objectives: Verification of the applicability of external ear parameters in differentiation between adult Egyptians and Malaysians. Methodology: The study included 160 adult subjects (80 Egyptians and 80 Malaysians) who were equally divided between both sexes. Seven measurements were obtained for the left auricle using a digital vernier caliper as follows: ear length, ear width, base of auricle, lobular length, lobular width, conchal length, and conchal width. Then, ear, lobular, lobule ear, and conchal indices were calculated. Results: Regarding males; ear length, ear width, base of auricle, lobular length, lobular width, conchal width, ear index, and conchal index were significantly higher in Egyptians. Ear width yielded the highest accuracy for population determination using logistic regression (81.3%) and Receiver Operator Characteristic (ROC) curve analyses (Area Under Curve ‘AUC'=0.856). The best result was obtained when the eight significant parameters were included in one regression model (Accuracy = 86.3% and AUC = 0.923). While for females; ear length, ear width, base of auricle, lobular length, and conchal width were significantly higher in Egyptians. Only the lobular index was significantly higher in Malaysian females. Ear width achieved the highest accuracy using logistic regression (72.5%) and ROC curve analyses (AUC=0.773). The best result was obtained when the six significant parameters were included in one regression model (Accuracy = 76.3% and AUC = 0.828). Conclusion: The auricular parameters can be used as a valuable tool in differentiation between Egyptians and Malaysians with reasonable accuracies in both sexes.

DOI

10.21608/ejfsat.2022.130231.1256

Keywords

Forensic, identification, ethnicity, Auricular parameters, Egyptians, Malaysians

Authors

First Name

Saffa

Last Name

Abdelaziz

MiddleName

Abdelaziz Mohamed

Affiliation

Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Alexandria University

Email

dr.saffa@gmail.com

City

Alexandria

Orcid

0000-0002-6667-0176

Volume

23

Article Issue

1

Related Issue

40135

Issue Date

2023-03-01

Receive Date

2022-04-01

Publish Date

2023-03-01

Page Start

93

Page End

109

Print ISSN

1687-0875

Online ISSN

2535-1915

Link

https://ejfsat.journals.ekb.eg/article_292551.html

Detail API

https://ejfsat.journals.ekb.eg/service?article_code=292551

Order

292,551

Type

Original Article

Type Code

429

Publication Type

Journal

Publication Title

The Egyptian Journal of Forensic Sciences and Applied Toxicology

Publication Link

https://ejfsat.journals.ekb.eg/

MainTitle

Verification of the applicability of auricular parameters in differentiation between adult Egyptians and Malaysians

Details

Type

Article

Created At

23 Dec 2024