Association between sexual maturation with neck circumference and body mass index in Brazilian schoolchildren
Palabras clave:
Body mass index, Children, Puberty, Sexual precocityResumen
Objective
We aimed to evaluate the association of neck circumference and body mass index with sexual maturation in nine-year-old children.
Methods
This is a cross-sectional study nested in a Brazilian cohort study named the Predictors of Maternal and Infant Excess Body Weight Study. The present study used data from adult women and their children obtained at baseline and after 2 and 9 years of follow-up. The child’s sexual maturation was assessed according to Tanner stage. Logistic regression models adjusting for important covariates were used to examine the association of neck circumference with Tanner stages.
Results
The prevalence in stages 2-5 for breast development in girls and for genitalia in boys was 69.1% and 51.3%, respectively. There was a higher (p<0.05) percentage of girls (35.3%) at stages 2-5 for pubic hair development when compared to boys (9.2%). For each unit increase in body mass index and neck circumference, the odds of girls being 2-5 stages for breast development were 1.52 (95% CI 1.17-1.97) and 2.67 (95% CI 1.40-5.09) times, respectively. In other words, the odds of girls being 2-5 stages for breast development were about 1.8 times higher when neck circumference was considered as a predictor, in relation to the body mass index measure
(OR=2.67 vs. OR=1.52, respectively).
Citas
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Derechos de autor 2025 Cecilia Burigo Corrêa, Daniela dos Santos, Silmara Salete de Barros Silva Mastroeni, Marco Fabio Mastroeni

Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.