Mahakkanukrauh Pasuk, Ruengdit Sittiporn, Tun Saw Myint, Case D Troy, Sinthubua Apichat
Forensic Osteology Research Center, Faculty of Medicine, Chiang Mai University, 50200, Thailand; Excellence in Osteology Research and Training Center (ORTC), Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Anatomy, Faculty of Medicine, Chiang Mai University, 50200, Thailand.
Forensic Osteology Research Center, Faculty of Medicine, Chiang Mai University, 50200, Thailand.
Forensic Sci Int. 2017 Feb;271:127.e1-127.e7. doi: 10.1016/j.forsciint.2016.11.043. Epub 2016 Dec 7.
The coxal bone shows a very high degree of sexual dimorphism both morphologically and metrically. However, despite a number of recent studies on sex estimation from the skeleton in Thailand, no osteometric methods of sexing the Thai os coxa have been proposed. Therefore, the aim of this study was to develop a standard sex estimation method for a Thai population by examining the efficacy of six coxal bone measurements and eight indices obtained from 200 Thai skeletons. Independent samples t-tests revealed statistically significant differences between males and females for all but one of the measurements. The equation with the highest correct allocation accuracy was based on four measurements (pubis length, ischium length, total height and acetabulum diameter) and had a predicted and cross-validated accuracy of 96.9% and a tested accuracy of 97.5% on a holdout sample of 40 individuals. The single variable equation with the highest correct allocation accuracy of 94.4% and a tested accuracy of 97.5% was for the ischiopubic index, which is calculated from ischium length and pubis length. Percentage accuracies in predicting sex from these equations were higher than many previous studies, suggesting high levels of sexual dimorphism in the Thai os coxa.
髋骨在形态和测量方面都表现出高度的性别二态性。然而，尽管最近有一些关于泰国骨骼性别估计的研究，但尚未提出用于泰国髋骨性别的骨测量方法。因此，本研究的目的是通过检查从200具泰国骨骼获得的六个髋骨测量值和八个指数的有效性，为泰国人群开发一种标准性别估计方法。独立样本t检验显示，除一项测量外，所有测量的男性和女性之间均存在统计学上的显著差异。正确分配准确率最高的方程基于四项测量值（耻骨长度、坐骨长度、总高度和髋臼直径），在40名个体的保留样本上，预测准确率和交叉验证准确率为96.9%，测试准确率为97.5%。正确分配准确率最高为94.4%且测试准确率为97.5%的单变量方程是坐骨耻骨指数，该指数由坐骨长度和耻骨长度计算得出。这些方程预测性别的准确率高于许多先前的研究，表明泰国髋骨存在高度的性别二态性。
