Sex Estimation of Han Adults in Western China Based on Three-Dimensional Cranial CT Reconstruction.
10.12116/j.issn.1004-5619.2022.220101
- Author:
Xiao-Tong YANG
1
;
Cheng-Hui SUN
2
;
Yong-Gang MA
3
;
Yong-Jie CAO
4
;
Jian XIONG
4
;
Ji ZHANG
4
;
Ping HUANG
4
Author Information
1. Department of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China.
2. Criminal Science and Technology Research Institute, Fengxian Branch of Shanghai Municipal Public Security Bureau, Shanghai 201499, China.
3. Department of Medical Imaging, 3201 Hospital Affiliated, Xi'an Jiaotong University, Hanzhong 723000, Shaanxi Province, China.
4. Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China.
- Publication Type:Journal Article
- Keywords:
CT three-dimensinal restruction;
Han population;
cranium;
forensic anthropology;
sex estimation
- MeSH:
Humans;
Adult;
Reproducibility of Results;
Sex Determination by Skeleton/methods*;
Forensic Anthropology;
Skull/anatomy & histology*;
Imaging, Three-Dimensional;
China;
Tomography, X-Ray Computed
- From:
Journal of Forensic Medicine
2023;39(1):27-33
- CountryChina
- Language:English
-
Abstract:
OBJECTIVES:To examine the reliability and accuracy of Walker's model for estimating the sex of Han adults in western China by using cranium three-dimensional (3D) CT reconstruction, and to study the suitable cranial sex estimation model for Han people in western China.
METHODS:A total of 576 cranial CT 3D reconstructed images from Hanzhong Hospital in Shaanxi Province from 2017 to 2021 were collected. These images were divided into the experimental group with 486 samples and the validation group with 90 samples. Walker's model was used by observer 1 to estimate the sex of experimental group samples. The logistic function applicable to Han people in western China was corrected by observer 1. The 90 samples in the validation group were scored and substituted into the modified logistic function to complete the back substitution test by observer 1, 2 and 3.
RESULTS:The accuracy of sex estimation of Han adults in western China was 63.2%-77.2% by applying Walker's model. The accuracy of modified logistic function was 82.9%. The accuracy of sex estimation through back substitution test by 3 observers was 75.6%-91.1%, with a Kappa value of 0.689 (P<0.05) for inter-observer consistency and 0.874 (P<0.05) for intra-observer consistency.
CONCLUSIONS:There are great differences in bone characteristics among people from different regions. The modified logistic function can achieve higher accuracy in Han adults in western China.
