Klales Alexandra R
Department of Applied Forensic Sciences, Mercyhurst University, 501 East 38th Street, Erie, PA, 19380, USA.
J Forensic Sci. 2016 Mar;61(2):295-301. doi: 10.1111/1556-4029.13008. Epub 2015 Dec 22.
This research evaluates secular change in Phenice's (Am J Phys Anthropol, 30, 1969 and 297) three morphological traits of the pubis, as described by Klales et al. (Am J Phys Anthropol, 149, 2012 and 104): medial aspect of the ischio-pubic ramus, subpubic contour, and ventral arc. Ordinal scores were collected for these traits and compared between a sample of innominates from the historical Hamann-Todd Collection (n = 170) and modern Bass Donated Collection (n = 129). Using the Freeman-Halton test, significant differences between temporal sample score frequencies were found for all traits in females and for the subpubic contour and ventral arc in males. Despite these findings, classification accuracy using logistic regression between the temporal periods remained low (68.7%). These results suggest that secular changes in trait expression are occurring; however, sex estimation methods using these traits and created with historical samples are still applicable to modern forensic cases. In fact, the secular changes occurring in these traits contribute to better classification accuracy between sexes in modern populations.
本研究评估了如克莱尔斯等人（《美国体质人类学杂志》，第149卷，2012年，第104页）所描述的，耻骨的菲尼克斯（《美国体质人类学杂志》，第30卷，1969年，第297页）三个形态特征的长期变化：耻骨下支的内侧、耻骨下轮廓和腹侧弧。收集了这些特征的有序评分，并在历史哈曼 - 托德藏品（n = 170）和现代巴斯捐赠藏品（n = 129）的无名骨样本之间进行比较。使用弗里曼 - 哈尔顿检验，发现所有女性特征以及男性的耻骨下轮廓和腹侧弧在不同时期样本评分频率之间存在显著差异。尽管有这些发现，但使用逻辑回归在不同时期之间的分类准确率仍然较低（68.7%）。这些结果表明特征表达正在发生长期变化；然而，使用这些特征并基于历史样本创建的性别估计方法仍然适用于现代法医案件。事实上，这些特征发生的长期变化有助于提高现代人群中性别分类的准确率。
