Evidence map›Paper›PMID 25400670›Full record

ReviewIranian journal of nursing and midwifery research2014

Menarche age in Iran: A meta-analysis.

Nasim Bahrami, Mohammad Ali Soleimani, Yiong Huak Chan, Morteza Ghojazadeh, Parvin Mirmiran

Abstract readReview
PubMed Full text at PMC
In one paragraph

Review in Iranian journal of nursing and midwifery research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  15. Prevalence of premenstrual syndrome in Iran: A systematic review and meta-analysis.International journal of reproductive biomedicine · 2017
    Review
  16. Article
  17. Menstrual Disturbances in Women With Congenital Heart Diseases.Research in cardiovascular medicine · 2016
    Article
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  19. 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

5 authors.

Nasim BahramiDepartment of Midwifery, School of Nursing and Midwifery, Qazvin University of Medical Sciences, Qazvin, Iran.
Mohammad Ali SoleimaniDepartment of Nursing, School of Nursing and Midwifery, Qazvin University of Medical Sciences, Qazvin, Iran.
Yiong Huak ChanBiostatistics Unit, Yong Loo Lin School of Medicine, National University Health System, Singapore.
Morteza GhojazadehLiver and Gastrointestinal Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Parvin MirmiranDepartment of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundResearch shows that the age at menarche, as an essential element in the reproductive health of women, had been decreasing in the 19(th) and 20(th) centuries, and shows a huge variation across different countries. There are numerous studies performed in Iran reporting a range of age at menarche. Thus, this meta-analysis aimed to determine the overall mean age at menarche of the girls in Iran. MATERIALS AND

methodsAll relevant studies were reviewed using sensitive and standard keywords in the databases from 1950 to 2013. Two raters verified a total of 1088 articles based on the inclusion criteria of this study. Forty-seven studies were selected for this meta-analysis. Cochran test was used for samples' homogeneity (Tau-square). The mean age at menarche of the girls in Iran with 95% confidence interval (CI) from the random effects was reported.

resultsThe homogeneity assumption for the 47 reviewed studies was attained (Tau-square = 0.00). The mean (95% CI) menarche age of Iranian girls from the random effects was 12.81 (95% CI: 12.56-13.06) years.

conclusionsThe results of this study showed that mean age at menarche was less than that of some European developed countries such as Switzerland, Sweden, and Denmark, more than that reported in some countries such as Greece and Italy, and similar to the values obtained in the United States of America and Colombia. Lower age at menarche in Iran may be largely attributed to the changes in lifestyle and diet of the children.

Indexed as

IranMenarchemeta-analysis

Identifiers

PMID25400670
PMCPMC4223959

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Registered trials

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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.