Independent validation of sex estimation equations using ulnar dimensions and weight in a northeastern Thai population
Background: Sexual dimorphism in human skeletal remains is crucial for forensic identification and archaeological studies. This study develops and validates sex estimation equations using ulnar dimensions and weight in a northeastern Thai population. Materials and methods: The study examined 600 uln...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Translational Research in Anatomy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214854X2500024X |
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| Summary: | Background: Sexual dimorphism in human skeletal remains is crucial for forensic identification and archaeological studies. This study develops and validates sex estimation equations using ulnar dimensions and weight in a northeastern Thai population. Materials and methods: The study examined 600 ulnae (300 male, 300 female) from the Khon Kaen University skeletal collection, using 400 for equation development and 200 for independent validation. Maximum length, midshaft circumference, weight, and the weight-to-length ratio were assessed. Results: Significant differences between sexes were found across all variables. Weight demonstrated the highest single-variable accuracy (88.50 %), while combining circumference and weight achieved 90.80 % accuracy. Validation confirmed equation stability, with no significant difference between the training and validation groups (90.75 % vs. 90.50 %, p = 0.77). The equations showed excellent discriminatory ability (AUC = 0.959), high specificity for female identification (95.00 %), and good sensitivity for male identification (86.00 %). The positive likelihood ratio of 17.20 further confirmed the robustness of the method. Conclusion: This research contributes to forensic anthropology by validating accurate sex estimation methods for the northeastern Thai population while demonstrating the effectiveness of bone weight as a sex determination variable. |
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| ISSN: | 2214-854X |