Evidence map›Paper›PMID 37093553›Full record

ArticleWorld journal of pediatrics : WJP2023

Secular trends and urban-rural disparities in the median age at menarche among Chinese han girls from 1985 to 2019.

Ning Ma, Di Shi, Jia-Jia Dang, Pan-Liang Zhong, Yun-Fei Liu, Shan Cai, Yan-Hui Dong, Pei-Jin Hu, Jun Ma, Yi Song

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Article in World journal of pediatrics : WJP, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Review
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  6. Genetic insights into the relationship between age at menarche and mental health-related phenotypes.European psychiatry : the journal of the Association of European Psychiatrists · 2026
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  15. Socioeconomic Status and Age at Menarche in Türkiye.American journal of human biology : the official journal of the Human Biology Council · 2025
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  18. Long-term exposure to ambient PMBMC public health · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Ning MaInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Di ShiInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Jia-Jia DangInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Pan-Liang ZhongInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Yun-Fei LiuInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Shan CaiInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Yan-Hui DongInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Pei-Jin HuInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Jun MaInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Yi SongInstitute of Child and Adolescent Health, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing, 100191, China. songyi@bjmu.edu.cn.ORCID 0000-0001-6990-6781

Funding

National Natural Science Foundation of China 82273654
6 · The paper itself

Abstract

backgroundMenarche is a substantial milestone of female puberty. Timing of age at menarche is considered the key to understanding the potential linkages with women's health outcomes later in life. This study aimed to explore the secular trends and urban‒rural disparities in the median age at menarche among Chinese Han girls from 1985 to 2019.

methodsData 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 examined. Girls were asked whether menarche had occurred. The 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 areas.

resultsThe 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 areas. The 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 2019.

conclusionsThe median age at menarche among Chinese Han girls continued to decline from 1985 to 2019 but at a slowing pace in the last five years. Urban‒rural disparities gradually narrowed. Sexual and reproductive health education and interventions to prevent the decline in the age of menarche are needed, especially in rural areas.

Indexed as

MenarcheRural PopulationUrban PopulationAdolescentAge FactorsChildChinaCross-Sectional StudiesFemaleHumansMenarchePubertySexual developmentTrendsUrban‒rural inequality

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.