Estimasi Tinggi Badan Berdasarkan Panjang Tulang Tibia dengan Metode Percutanous pada Suku Jawa di Sumatera Utara

Abstract

Background: Stature estimation) is a critical procedure in the field of forensics, especially when human remains are discovered in a fragmented or incomplete state. Due to the fact that bone proportions are ethnic-specific, there is an urgent need for a new and accurate estimation formula tailored for the Javanese ethnic group in North Sumatra. Objective: The study aims to analyze correlation between tibia length and body height and to formulate a new, valid, and specific regression equation for stature estimation for the Javanese population aged 21–25 years in North Sumatra. Method: A quantitative analytic study using a cross-sectional correlation approach.Sample: Involved 100 subjects (50 Males and 50 Females) of Javanese ethnicity in North Sumatra.Variables: Body Height (TB), right tibia length (PTK/PTR), and left tibia length (PTL). Analysis: Pearson correlation test and Simple and Multiple Linear Regression analysis. The selection criterion for the best formula was the lowest Standard Error of the Estimate (SEE). Results and Discussion: A positive, strong, and highly statistically significant correlation (p < 0.005) was found between tibia length and body height in both sexes. The tibia was confirmed to have a substantial contribution to individual height variation. Determination of the Best Model: The Multiple Regression model was rejected due to a higher SEE and signs of multicollinearity (negative coefficient for eft tibia), rendering it invalid.The best model is the Simple Linear Regression using the single predictor, right tibia length (PTK/PTR), as it consistently yielded the lowest SEE. Conclusion: The research successfully established a new, accurate, and specific stature estimation formula for the Javanese population in North Sumatra. This formula holds substantial relevance and is recommended as a fundamental reference in regional forensic anthropology to enhance the postmortem identification of Javanese victims discovered in an incomplete state in the North Sumatra region.