Sex estimation standards for medieval and contemporary Croats

Željana Bašić · Ivana Kružić · Ivan Jerković · Deny Anđelinović · Šimun Anđelinović

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Forensic Anthropology and Bioarchaeology Studies Forensic and Genetic Research Paleopathology and ancient diseases

Abstract

AIM: To develop discriminant functions for sex estimation on medieval Croatian population and test their application on contemporary Croatian population. METHODS: From a total of 519 skeletons, we chose 84 adult excellently preserved skeletons free of antemortem or postmortem changes and took all standard measurements. Sex was estimated/determined using standard anthropological procedures and ancient DNA (amelogenin analysis) where pelvis was insufficiently preserved or where sex morphological indicators were not consistent. We explored which measurements showed sexual dimorphism and used them for developing univariate and multivariate discriminant functions for sex estimation. We included only those functions that reached accuracy rate ≥80%. We tested the applicability of developed functions on modern Croatian sample (n=37). RESULTS: From 69 standard skeletal measurements used in this study, 56 of them showed statistically significant sexual dimorphism (74.7%). We developed five univariate discriminant functions with classification rate 80.6%-85.2% and seven multivariate discriminant functions with an accuracy rate of 81.8%-93.0%. When tested on the modern population functions showed classification rates 74.1%-100%, and ten of them reached aimed accuracy rate. Females showed higher classified in the mediaeval populations, whereas males were better classification rates in the modern populations. CONCLUSION: Developed discriminant functions are sufficiently accurate for reliable sex estimation in both medieval Croatian population and modern Croatian samples and may be used in forensic settings. The methodological issues that emerged regarding the importance of considering external factors in development and application of discriminant functions for sex estimation should be further explored.

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References

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2020Adjusting posterior probabilities to meet predefined accuracy criteria: A proposal for a novel approach to osteometric sex estimation 2018Creating reference data on sex for ancient populations using the Probabilistic Sex Diagnosis method: A validation test using the results of aDNA analysis

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