Background: Sex identification of unknown skeletal human remains is of great importance in establishing identity and individuality. In adults, hip bone is the most reliable sex indicator because of its sexual dimorphism. Each population should have its own specific standards of identification. Objectives: Develop a logistic regression formula for adult sex identification using three-dimensional computed tomography (3D-CT) of the pelvis, and assessment of its validity in sex determination among a sample of Egyptian population at Suez Canal region. Materials and Methods: 141 pelvi-abdominal CT images (free of any pelvic orthopaedic disorder) were included; they were reconstructed to produce 3D-CT pelvic images; they were divided into calibration group (47 male & 47 female) and test group (47 CT images their sex is unknown to the observer), twenty radiometric variables were measured for the calibration groups. A logit response formula for sex prediction was developed and applied on the test group for sex prediction. Results: The logit response formula for the test sample showed sensitivity, specificity and overall accuracy 100%. Conclusion; Proposed method represent a quick and reliable metric method in establishing sex from the pelvis.
Background: Personal identification is one of the most important challenges that may face forensic scientists, especially in cases of incomplete, mutilated or even fragmented remains. Stature is one of the primary identification parameters. Previous studies were performed to estimate stature from hand and its corresponding print dimensions using different regression models. These studies highlight the importance of the presence of population-specific standards. The current study aims to develop predictive regression equations that could be used for stature estimation using anthropometric hands and their corresponding print dimensions. One hundred and fifty adult participants were enrolled in the study (75 male & 75 female). Statures were measured, and seven dimensions of each hand and its corresponding print were also measured for each participant . Results: All measurements of the male group were significantly higher. Bilateral significant differences were found in some hands and their corresponding print dimensions in both sexes. According to Karl Pearson's correlation coefficient, all measurements were significantly correlated to stature; "right-hand length" showed the strongest correlation with stature in both sexes, while "right handprint length" in females and "left handprint length" in males showed the strongest correlation with stature. Simple linear regression analysis showed that both hand and handprint lengths in both sides for both sexes had the lowest standard error of estimate, ensuring their lowest prediction error in stature estimation. Conclusion: hand and its corresponding print dimensions can be used in adult stature estimation. Further studies of people of other geographical regions in Egypt are recommended to get a biological-specific Egyptian standard.
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