Secular trends and urban–rural disparities in the median age at menarche among Chinese han girls from 1985 to 2019
作者机构：Institute of Child and Adolescent HealthSchool of Public HealthPeking UniversityNo.38 Xueyuan RoadHaidian DistrictBeijing100191China National Health Commission Key Laboratory of Reproductive HealthBeijing100191China
出 版 物：《World Journal of Pediatrics》 (世界儿科杂志（英文版）)
年 卷 期：2023年第19卷第12期
页 面：1162-1168页
核心收录：
学科分类：1004[医学-公共卫生与预防医学(可授医学、理学学位)] 100404[医学-儿少卫生与妇幼保健学] 10[医学]
基 金：The present study was funded by National Natural Science Foundation(82273654 to Y.S.)
主 题：Menarche Puberty Sexual development Trends Urban-rural inequality
摘 要：Background Menarche is a substantial milestone of female *** of age at menarche is considered the key to understanding the potential linkages with women’s health outcomes later in *** study aimed to explore the secular trends and urban‒rural disparities in the median age at menarche among Chinese Han girls from 1985 to *** Data were extracted from the 1985,1995,2005,2014,and 2019 Chinese National Surveys on Students’Constitution and Health,which were nationally representative cross-sectional studies,and a total of 173,535 Han girls aged 9–18 years were *** were asked whether menarche had *** median age at menarche was estimated by probit analysis.Z tests were used to compare the differences between survey years and between urban and rural *** The median age at menarche among Chinese Han girls decreased from 13.37 years in 1985 to 12.00 years in 2019,and the overall decrease was more significant in rural areas(1.77 years)than in urban areas(0.99 years).The average five-year change in the decrease in the median age at menarche showed an accelerating and then slowing pace;and it was observed similarly in both urban and rural *** urban‒rural disparities shrank from 0.64 years in 1985 to 0.44 years in 1995,then to 0.27 years in 2005,0.24 years in 2014,and finally to−0.14 years in *** The median age at menarche among Chinese Han girls continued to decline from 1985 to 2019 but at a slowing pace in the last five ***‒rural disparities gradually *** and reproductive health education and interventions to prevent the decline in the age of menarche are needed,especially in rural areas.
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