STROBE: The relationship between asthma and early menarche in Korean adolescents

Abstract

We explored the relationship between asthma and early menarche in a representative sample of Korean adolescents. Web-based self-reported data collected from 2006 to 2015 by the Korean Youth Risk Behavior Web-based Survey were used. Menarche status was divided into "early" (<12years of age, n=69,520) and "not early" (≥12years of age, n=234,065). Adolescent girls with early menarche exhibited a higher incidence of asthma (8.1% vs 7.4%, P