通过使用耻骨联合三维激光扫描估算墨西哥和波多黎各现代人口的死亡年龄

4区 生物学 Q2 Medicine
Cristina Soto, Bridget Algee-Hewitt, G. Morante, Dennis Slice, D. Steadman
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引用次数: 0

摘要

从成人骨骼中得出的可靠的死亡年龄估计在法医人类学中至关重要,因为它有助于在法医死亡调查中使用的身份参数。然而,可靠的估计是困难的,因为许多传统的老龄化方法依赖于一套来自欧洲和非洲后裔的特定人群标准。由于缺乏关于代表性不足的人口,特别是拉丁裔人口的老龄化模式的潜在差异的信息,可能会妨碍我们作出有用的死亡年龄估计。针对这些问题,本研究探讨了目前可用的老龄化技术的效用,以及是否需要针对拉丁裔群体的人口老龄化方法。作者从代表墨西哥和波多黎各血统的现代人的两个骨骼收藏品中获得了数据。他们研究了五种新开发的基于计算形状的技术,使用3D激光扫描耻骨联合和一种传统的骨对相技术。对所有计算方法和传统方法进行了验证测试,并使用计算算法生成了新的种群特定方程,并针对子样本进行了测试。结果表明,应用于耻骨联合的传统和计算老化技术对35-45岁的个体效果最好。偏差和不准确水平随着实足年龄的增加而增加,对35岁以下个体的高估和对45岁以上个体的低估。新的回归模型提供的错误率与在美国白人男性身上开发的原始计算模型相当,在某些情况下甚至优于前者,但年龄估计并没有显著改善。这项研究表明,人口特异性模型不一定能改善拉丁裔样本的年龄估计。结果确实表明,计算方法最终可以优于Suchey-Brooks方法,并在估计拉丁裔样本的死亡年龄时提供更高的客观性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Age-at-Death Estimation for Modern Populations in Mexico and Puerto Rico through the Use of 3D Laser Scans of the Pubic Symphysis
Reliable age-at-death estimates from the adult skeleton are of fundamental importance in forensic anthropology, because it contributes to the identity parameters used in a medicolegal death investigation. However, reliable estimates are difficult because many traditional aging methods depend on a set of population-specific criteria derived from individuals of European and African descent. The absence of information on the potential differences in the aging patterns of underrepresented, especially Latinx, populations may hinder our efforts to produce useful age-at-death estimates. In response to these concerns, this study explores the utility of currently available aging techniques and whether populationspecific aging methods among Latinx groups are needed. The authors obtained data from two skeletal collections representing modern individuals of Mexican and Puerto Rican origin. They examined five newly developed computational shape-based techniques using 3D laser scans of the pubic symphysis and one traditional bone-to-phase technique. A validation test of all computational and traditional methods was implemented, and new population-specific equations using the computational algorithms were generated and tested against a subsample. Results suggest that traditional and computational aging techniques applied to the pubic symphysis perform best with individuals within 35–45 years of age. Levels of bias and inaccuracy increase as chronological age increases, with overestimation of individuals younger than 35 years and underestimation of individuals older than 45 years. New regression models provided error rates comparable to, and in some occasions outperformed, the original computational models developed on white American males, but age estimates did not significantly improve. This study shows that population-specific models do not necessarily improve age estimates in Latinx samples. Results do suggest that computational methods can ultimately outperform the Suchey-Brooks method and provide improved objectivity when estimating age at death in Latinx samples.
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来源期刊
Human Biology
Human Biology 生物-生物学
CiteScore
1.90
自引率
0.00%
发文量
88
审稿时长
>12 weeks
期刊介绍: Human Biology publishes original scientific articles, brief communications, letters to the editor, and review articles on the general topic of biological anthropology. Our main focus is understanding human biological variation and human evolution through a broad range of approaches. We encourage investigators to submit any study on human biological diversity presented from an evolutionary or adaptive perspective. Priority will be given to interdisciplinary studies that seek to better explain the interaction between cultural processes and biological processes in our evolution. Methodological papers are also encouraged. Any computational approach intended to summarize cultural variation is encouraged. Studies that are essentially descriptive or concern only a limited geographic area are acceptable only when they have a wider relevance to understanding human biological variation. Manuscripts may cover any of the following disciplines, once the anthropological focus is apparent: human population genetics, evolutionary and genetic demography, quantitative genetics, evolutionary biology, ancient DNA studies, biological diversity interpreted in terms of adaptation (biometry, physical anthropology), and interdisciplinary research linking biological and cultural diversity (inferred from linguistic variability, ethnological diversity, archaeological evidence, etc.).
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