Instituto Multidisciplinario de Historia y Ciencias Humanas (IMHICIHU)-Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Saavedra 15 (1083), Buenos Aires, Argentina.
Equipo Argentino de Antropología Forense, Buenos Aires, Argentina.
Sci Justice. 2021 Sep;61(5):528-534. doi: 10.1016/j.scijus.2021.06.007. Epub 2021 Jun 25.
Sex estimation of adult skeletons is an important step in forensic analysis. Although the femur has been metrically studied for sex assessment around the world, very limited information is actually available on modern populations of Argentina. In this paper, the estimation of sex based on the metric evaluation of the supero-inferior femoral neck diameter (SID) in a reference osteological collection from the contemporary Chacarita Cemetery of Buenos Aires City (Argentina), is evaluated. Protocols generated using SID in other three reference skeletal samples are also tested on this collection. One hundred and sixty-four individuals of both sexes and between 24 and 96 years old are analyzed. Inter and intra observer errors suggest that the replicability of the procedure is adequate. The sectioning point calculated from the direct measurements is 30.86 mm and results show a high degree of dimorphism. The proportions of correct sex discrimination and the likelihoods of correct allocation obtained with the direct measurements, along with the results of a discriminant function, a binary logistic regression and a Bayesian approach, are all higher than 0.85 (0.85-0.93 for females, 0.88-0.91 for males). When the formulae from other samples are used in the Chacarita Collection, the percentages of correct estimations range between 72.41% and 81.03% for females and between 80.46% and 88.50% for males, while the likelihoods are between 0.73 and 0.81 for females and between 0.79 and 0.82 for males. As the values for the estimations obtained using the statistical procedures generated in the present research are higher than those available for other collections, the method is more adequate to use in the analysis of contemporary skeletal remains from Buenos Aires and surrounding areas. The trends identified highlight the importance of population-specific metric methodologies in forensic contexts and deserve future testing in contemporary samples from neighbouring regions.
成人骨骼的性别估计是法医分析中的重要步骤。虽然股骨在世界各地的性别评估中都进行了度量研究，但实际上阿根廷现代人群的相关信息非常有限。本文评估了基于股骨颈上下径（SID）的度量评估来估算性别，该研究基于布宜诺斯艾利斯市查卡里塔公墓的当代骨骼收藏。还在该收藏中测试了其他三个参考骨骼样本中生成的 SID 协议。分析了 164 名 24 至 96 岁的男女个体。观察者内和观察者间的误差表明，该程序的可重复性是足够的。直接测量计算的分节点为 30.86 毫米，结果显示出高度的二态性。直接测量的性别判别正确率比例和正确分配的可能性与判别函数、二元逻辑回归和贝叶斯方法的结果均高于 0.85（女性为 0.85-0.93，男性为 0.88-0.91）。当在查卡里塔收藏中使用其他样本的公式时，女性的正确估计百分比在 72.41%-81.03%之间，男性在 80.46%-88.50%之间，而女性的可能性在 0.73-0.81 之间，男性在 0.79-0.82 之间。由于使用本研究中生成的统计程序获得的估计值高于其他收藏的估计值，因此该方法更适合分析布宜诺斯艾利斯及周边地区的当代骨骼遗骸。所确定的趋势强调了特定人群度量方法在法医学中的重要性，值得在未来对邻近地区的当代样本进行进一步测试。
