1. Temporal trend of age at menarche in Korean females born between 1927 and 2004: a population-based study
- Author
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Da Hye Lee, Jaehyun Kim, and Hwa Young Kim
- Subjects
age at menarche ,epidemiology ,obesity ,adolescent ,Korea ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
BackgroundsThe age at menarche has decreased worldwide. Previous studies on Korean adolescents have reported a downward trend in age at menarche. This study aimed to investigate the current trends in age at menarche among Korean adolescents using nationally representative data.Materials and methodsThe study used data from the Korea National Health and Nutrition Examination Survey 2007–2021. A total of 50,730 females born between 1927 and 2004 with information on age at menarche were included. The trend in age at menarche was analyzed according to 15 birth-year groups (with 5-year intervals) using quantile regression analysis.ResultsThe mean age at menarche decreased from 16.92 ± 0.06 years for females born before 1935 to 12.45 ± 0.04 years for females born between 2000 and 2004 (p
- Published
- 2024
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