This study aims to assess the sexual dimorphism of skull in a modern skeletal collection through a direct anthropometric methodology by using a logistic regression analysis as statistical approach in order to provide specific regression formulae for the Italian population. Thirtyfour measurements (24 from cranium, 10 from mandible; 33 linear distances, one angle) were taken on 80 individuals (40 males, 40 females). A stepwise discriminant function analysis selected the combination of variables which best discriminated between sexes, and a cross-validation assessed the accuracy rate of the original sample. Most distances resulted longer in males than in females, but differences were statistically significant only for 12 and 6 out of respectively 24 cranium and 10 mandibular distances. Five combined cranium features returned a prediction accuracy of 88.6% (y = -81.01 + 0.14* Maximum cranial length + 0.16* Basion-bregma height -0.05* Cranial base length +0.20* Bizygomatic breadth +0.31* Nasal height; adjusted R-2 = 47.0%). Nine mandibular features were required to reach 74.7% accuracy (y = -93.08 + 0.19* Bigonial width +0.14* Bicondylar breadth +0.11* Mandibular length +0.18* Height of the mandibular body at mental foramen +0.21* Chin height -0.09* Mandibular angle -0.06* Minimum ramus breadth -0.05* Maximum ramus height -0.01* Maximum ramus breadth; adjusted R-2 = 23.92%). Current results and existing literature suggested that only few cranial measurements can be used for diagnosis of sex: the same variables showed similar accuracy in different ethnic contexts. In conclusion, some aspects of sexual dimorphism of skull seem to be independent from ancestry.
Preliminary study on sexual dimorphism of metric traits of cranium and mandible in a modern Italian skeletal population and review of population literature / A. Cappella, D. Gibelli, A. Vitale, M. Zago, C. Dolci, C. Sforza, C. Cattaneo. - In: LEGAL MEDICINE. - ISSN 1344-6223. - 44(2020 May).
|Titolo:||Preliminary study on sexual dimorphism of metric traits of cranium and mandible in a modern Italian skeletal population and review of population literature|
CAPPELLA, ANNALISA (Primo) (Corresponding)
GIBELLI, DANIELE MARIA (Secondo)
SFORZA, CHIARELLA (Penultimo)
CATTANEO, CRISTINA (Ultimo)
|Parole Chiave:||Physical anthropology; Craniometric analysis; Cranial anatomy; Sexual dimorphism; Population specific data; Skeletal collection; Logistic regression;|
|Settore Scientifico Disciplinare:||Settore BIO/16 - Anatomia Umana|
Settore MED/43 - Medicina Legale
Settore ING-INF/06 - Bioingegneria Elettronica e Informatica
|Data di pubblicazione:||mag-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.legalmed.2020.101695|
|Appare nelle tipologie:||01 - Articolo su periodico|
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