Evaluation of Age Estimation Technique: Testing Traits of the Acetabulum To Estimate Age at Death in Adult Males*

Stephanie E. Calce · Tracy L. Rogers

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Forensic Anthropology and Bioarchaeology Studies Forensic and Genetic Research Forensic Entomology and Diptera Studies

Abstract

This study evaluates the accuracy and precision of a skeletal age estimation method, using the acetabulum of 100 male ossa coxae from the Grant Collection (GRO) at the University of Toronto, Canada. Age at death was obtained using Bayesian inference and a computational application (IDADE2) that requires a reference population, close in geographic and temporal distribution to the target case, to calibrate age ranges from scores generated by the technique. The inaccuracy of this method is 8 years. The direction of bias indicates the acetabulum technique tends to underestimate age. The categories 46-65 and 76-90 years exhibit the smallest inaccuracy (0.2), suggesting that this method may be appropriate for individuals over 40 years. Eighty-three percent of age estimates were ±12 years of known age; 79% were ±10 years of known age; and 62% were ±5 years of known age. Identifying a suitable reference population is the most significant limitation of this technique for forensic applications.

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References

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2012Estimation of age from human sternum: an autopsy study on a sample from South India 2016Training and interobserver reliability in qualitative scoring of skeletal samples 2015Obtaining appropriate interval estimates for age when multiple indicators are used: evaluation of an ad-hoc procedure 2016New approach to age estimation of male and female adult skeletons based on the morphological characteristics of the acetabulum

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