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. 2009 Jul 7;94(9):3497–3504. doi: 10.1210/jc.2009-1060

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Copyright © 2009 by The Endocrine Society

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A, Genetic and environmental contributions to leptin-%BF association in 218 male adolescent twin pairs adjusted with age and Tanner stages. AE model was the best-fitting model for the bivariate analyses of %BF and leptin in males; r_G, and r_E denoted genetic and unique environmental correlations, respectively; a² and e² denoted percentage of total phenotypic variance accounted for genetic factors and unique environmental factors; r_TP, total phenotypic correlation; C_GCP, genetic contribution to total phenotypic correlation; C_UCP, unique environmental contribution to total phenotypic correlation. B, Genetic and environmental contributions to leptin-%BF association in 243 female adolescent twin pairs adjusted with age and Tanner stages. AE model was the best-fitting model for the bivariate analyses of %BF and leptin in females; r_G, and r_E denoted genetic and unique environmental correlations, respectively; a² and e² denoted percentage of total phenotypic variance accounted for genetic factors and unique environmental factors; r_TP, total phenotypic correlation; C_GCP, Genetic contribution to total phenotypic correlation; C_UCP, unique environmental contribution to total phenotypic correlation.