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Sexual dimorphism in mandibular growth of French‐Canadian children 6 to 10 years of age
Author(s) -
Buschang P. H.,
Tanguay R.,
Demirjian A.,
la Palme L.,
Goldstein H.
Publication year - 1986
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330710105
Subject(s) - sexual dimorphism , multivariate statistics , multivariate analysis of variance , bayesian multivariate linear regression , regression , regression analysis , mandible (arthropod mouthpart) , demography , multivariate analysis , variation (astronomy) , linear regression , biology , mathematics , statistics , zoology , sociology , genus , physics , astrophysics
Abstract Polynomial regression is used to model the mandibular growth of 28 girls and 26 boys who were followed longitudinally from 6 to 10 years of age. The pooled‐within individual designs indicate that ramus height follows a linear pattern of size increase; corpus and total mandibular lengths display curvilineal, decelerating, patterns of growth over the age range. Multivariate analyses of variance reveal significant sex differences in size, favoring boys, for the two length measures at 6 years of age. Growth velocity for corpus length is also significantly greater in boys than in girls. Sexual dimorphism in the growth of total mandibular length is more complex, including differences in velocity and deceleration. Ramus height shows no significant pattern of variation between boys and girls for either size or growth velocity.