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                            Library & Multimedia
 Testing the Applicability of Shape-based Computational Age-at-Death Estimation Methods Using Pubic Symphyseal Surface scans of Asian Origin
NCJ Number
              253898
Journal

*American Journal of Physical Anthropology* Volume: 168 Dated: 2019 Pages: 124-125
Author(s)
          Jieum Kim;
                        Bridget F.B. Algee-Hewitt;
                        Detelina K. Stoyanova;
                        Cristina Figueroa-Soto;
                        Dennis E. Slice
Date Published

2019
Length
              2 pages
Annotation
              This study assessed the applicability of recently tested computational methods for age-at-death estimation to a mixed sex sample from Asia.
Abstract
              Recent computational age-at-death estimation methods developed using 3D laser scans of the pubic symphysis have been shown to provide robust estimates of age for documented White individuals. Although validation testing has demonstrated reduced within-/between-observer error, improved objectivity, invariance to asymmetry, and equal applicability to female and male pubic symphyses, no study has explored the issue of population diversity. Concerns over broad applicability arise from the fact that these methods were developed using a reference sample composed of modern American White males and that the same sample was used to produce the final age estimate in the associated software, forAge, which implements the shape algorithms and multiple regression analyses; therefore, there is a need to determine their utility for people from different geographic regions. In the current Three shape-based measures that captured the gradual flattening of the face and changes in the ventral margin of the symphysis were used to build a series of regression models. The final age estimates were assessed for error and bias. Preliminary results from 69 scans suggest statistically significant relationships existed between ages-at-death and the three shape measures (p<0.05). R-squared values indicated that 30-50 percent of the shape variation can be explained by age. RMSE values of 10-11 years were lower than those originally reported. These preliminary results suggest the utility of these methods for Asia and support additional investigation for the rest of the region. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2015-DN-BX-K010


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Description


  
  
        
  Award
        MODELING SURFACE MORPHOLOGY OF THE PUBIC SYMPHYSIS: Quantitative Methods and Computational Tools for the Objective Estimation of Age-at-Death for Modern Populations
    
  
  
Date Published: January 1, 2019
    
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