About Antrometric v2.1: Precision in Stature Estimation
Antrometric v2.1 is a state-of-the-art web application designed for forensic anthropologists, archaeologists, and researchers to estimate human stature from long bone measurements with exceptional accuracy. Developed by Intelligent piXel GmbH and released in 2025, this tool builds on version 2.0 by incorporating expanded population data, including coefficients for the Thai population, ensuring broader applicability across diverse ethnic groups.
The core methodology relies on linear regression, a technique established by Mildred Trotter and Goldine Gleser in their seminal works (American Journal of Physical Anthropology, 1952 and 1958). For each bone, stature is calculated using the equation: stature equals a multiplied by bone length plus b, where coefficients a and b are specific to ethnicity, gender, and bone type (femur, tibia, fibula, humerus, radius, ulna). These coefficients are derived from extensive anthropometric datasets. For Thai individuals, coefficients are sourced from the study by Mahakkanukrauh et al. (Forensic Science International, 2011), which provides population-specific data for accurate stature estimation in this demographic.
When multiple bones are measured, Antrometric v2.1 computes a weighted mean to enhance precision. Each bone’s stature estimate is weighted inversely to its uncertainty (u), using the formula: weight equals 1 divided by u squared. The combined stature is then: weighted stature equals sum of (stature times weight) divided by sum of weights, and the combined uncertainty is calculated as: 1 divided by square root of sum of weights. This approach ensures that bones with lower uncertainty, such as the femur, contribute more to the final estimate, reducing the overall margin of error with each additional measurement.
A key feature is the tool’s ability to handle cases of unknown gender. In such scenarios, it averages the male and female coefficients for the selected ethnicity, providing a balanced estimate suitable for ambiguous skeletal remains. The application also supports measurements in both centimeters and inches, converting units seamlessly to accommodate international users.
Antrometric v2.1 integrates data for European, African, Asian, and Thai populations, drawing from foundational research by Trotter and Gleser, as well as modern studies like Feldesman et al. (Journal of Forensic Sciences, 1990). This comprehensive approach makes it an indispensable resource for forensic analysis worldwide.
Scientific Foundations
- Trotter M and Gleser G C (1952). Estimation of stature from long bones of American Whites and Negroes. American Journal of Physical Anthropology, 10(4), 463 to 514.
- Trotter M and Gleser G C (1958). A re-evaluation of estimation of stature based on measurements of stature taken during life and of long bones after death. American Journal of Physical Anthropology, 16(1), 79 to 123.
- Feldesman M R et al. (1990). The femur/stature ratio and estimates of stature in mid and late-Pleistocene fossil hominids. Journal of Forensic Sciences, 35(2), 431 to 446.
- Mahakkanukrauh P et al. (2011). Stature estimation from long bone lengths in a Thai population. Forensic Science International, 210(1 to 3), 279.e1 to 279.e7.
Last updated: March 16, 2025
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