Evidence map›Paper›PMID 33350182›Full record

ArticleJournal of Korean medical science2020

Trend of Menarcheal Age among Korean Girls.

Moon Young Seo, Shin Hye Kim, Anders Juul, Mi Jung Park

Open access · goldAbstract read
In one paragraph

Article in Journal of Korean medical science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 13% of its field
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
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  12. Discrete-time Survival Analysis of Risk Factors for Early Menarche in Korean Schoolgirls.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2023
    Article
  13. Genetic factors in precocious puberty.Clinical and experimental pediatrics · 2022
    Article
  14. Article
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

4 authors at 2 institutions in 2 countries.

Moon Young SeoDepartment of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea.ORCID https://orcid.org/0000-0002-1638-5780
Shin Hye KimDepartment of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea.ORCID https://orcid.org/0000-0003-0413-122X
Anders JuulDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.ORCID https://orcid.org/0000-0002-0534-4350
Mi Jung ParkDepartment of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea. pmj@paik.ac.kr.ORCID https://orcid.org/0000-0002-7202-500X
Inje University Sanggye Paik Hospital · KRUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMenarcheal age has been decreasing worldwide. However, few recent studies have observed trends in menarcheal age in larger populations, and the cutoff age for early menarche remains unclear. Therefore, we aimed to analyze recent trends of menarcheal age and to determine the cutoff age of early menarche based on nationally representative data.

methodsWe conducted a cross-sectional study of 351,006 Korean girls aged 12-18 years who were born in 1988-2003 based on the data of the 2006-2015 Korea Youth Risk Behavior Survey. We identified the distribution of age at menarche using the complex sample Cox regression model. Trends in the prevalence of early menarche were determined using the complex sample linear model.

resultsNinety-five percent of all the participants reported they had experienced menarche. The mean menarcheal age was 13.0 years (95% confidence intervals [CIs], 12.92-13.04) for girls born in 1988 and decreased to 12.6 years (95% CI, 12.54-12.61) for girls born in 2003. The cutoff age (the 3rd percentile value) for early menarche was 10.5 years during the study period. The prevalence of early menarche significantly increased from 1.8% in 2006 to 3.2% in 2015 (

conclusionWe reported an ongoing downward trend in menarcheal age in Korean girls born in 1988-2003, decreasing by 0.4 years over the 15 years.

Indexed as

MenarcheAdolescentAge FactorsBody Mass IndexChildCross-Sectional StudiesFemaleHumansObesityPrevalenceProportional Hazards ModelsRegression AnalysisRepublic of KoreaSurveys and QuestionnairesKoreaMenarcheTrends

Identifiers

PMID33350182
PMCPMC7752255
OpenAlexW3101992006

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.