Biological sex and stature estimations from dry sternum: A population-specific study in Northeastern Thais

Q3 Medicine
Chanasorn Poodendaen , Supawadee Klaikran , Atithaya Maihong , Narawadee Choompoo , Suthat Duangchit , Worrawit Boonthai , Nareelak Tangsrisakda , Supatcharee Arun , Chadaporn Chaimontri , Sitthichai Iamsaard
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Abstract

Background

Biological sex determination and stature estimation are crucial components to establish the biological profiling for human identification. The population-specific standards are still needed to apply for accurate assessment. Sternum has been demonstrated to have high sexual dimorphism in many populations, but has not yet been adequately studied in Northeastern Thais to be applied in cases where traditional bones are not available or fragmented. This study, therefore, aimed to develop the standard measurements in Northeastern Thai sternum.

Materials and Methods

The study examined 390 dry sterna (200 males, 190 females) collected from identified Thai skeletons. The length of manubrium, manubrium width, three corpus stern widths, and sternal body length were measured using a digital Vernier caliper. Logistic regression analysis was used for biological sex determination and the linear regression was employed to estimate the stature.

Results

All sternal parameters showed significant sexual dimorphism. The optimized multivariate model for biological sex determination using four sternal parameters achieved approximately 83.6 % classification accuracy. For stature estimation, the combined equation using three measurements revealed the strongest correlation (r = 0.588) with a Standard Error of Estimate (SEE) of 6.24 cm. Sex-specific equations showed the improved precision of male SEE = 5.871 cm and of female SEE = 5.798 cm, respectively.

Conclusion

This study provided the standards for biological sex determination and stature estimation from sternal measurements. Dry sternum can be useful for sex dimorphism and stature evaluation in forensic identification for Northeastern Thai population when the classical bones like complete pelvis, skull, or long bones are unavailable.
从干胸骨判断生物性别和身高:泰国东北部一项特定人群的研究
生物性别测定和身高估计是建立人类身份识别的生物图谱的重要组成部分。目前仍需要针对特定人群的标准来进行准确的评估。在许多人群中,胸骨已被证明具有高度的性别二态性,但尚未在泰国东北部进行充分研究,以应用于传统骨骼不可用或破碎的情况。因此,本研究旨在制定泰国东北部胸骨的标准测量方法。材料和方法本研究检查了从已确认的泰国骨骼中收集的390块干胸骨(200块男性,190块女性)。使用数字游标卡尺测量柄柄长度、柄柄宽度、三个体尾宽度和胸骨体长度。生物性别测定采用Logistic回归分析,身高估算采用线性回归分析。结果所有胸骨参数均表现出明显的性别二态性。使用四个胸骨参数进行生物性别测定的优化多元模型的分类准确率约为83.6 %。对于身高估算,使用三个测量值的组合方程显示出最强的相关性(r = 0.588),估计的标准误差(SEE)为6.24 cm。性别特异性方程表明,雄性SEE = 5.871 cm和雌性SEE = 5.798 cm的精度有所提高。结论本研究为生物性别判定和胸骨身高估算提供了依据。在泰国东北部人群的法医鉴定中,当没有完整的骨盆、颅骨或长骨等经典骨骼时,干胸骨可用于性别二态性和身材评估。
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来源期刊
Forensic Science International: Reports
Forensic Science International: Reports Medicine-Pathology and Forensic Medicine
CiteScore
2.40
自引率
0.00%
发文量
47
审稿时长
57 days
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