Evidence map›Paper›PMID 32928126›Full record

SynthesisBMC gastroenterology2020

Epidemiology of gastroesophageal reflux disease in Iran: a systematic review and meta-analysis.

Mohammad Karimian, Hassan Nourmohammadi, Majid Salamati, Mohammad Reza Hafezi Ahmadi, Fatemeh Kazemi, Milad Azami

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC gastroenterology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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. Dietary Vitamin B6 Intake and Gastroesophageal Reflux Disease: A Case-Control Study.JGH open : an open access journal of gastroenterology and hepatology · 2026
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  3. Insight into global burden of gastroesophageal reflux disease: Understanding its reach and impact.World journal of gastrointestinal pharmacology and therapeutics · 2025
    Review
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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

6 authors.

Mohammad KarimianDepartment of General Surgery, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran.
Hassan NourmohammadiDepartment of Internal Medicine, Shahid Mostafa Khomeini Hospital, Ilam, Iran.
Majid SalamatiDepartment of General Surgery, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran.
Mohammad Reza Hafezi AhmadiDepartment of Pathology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran.
Fatemeh KazemiSchool of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran.
Milad AzamiFaculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran. milad98azami@gmail.com.ORCID http://orcid.org/0000-0002-4509-5520

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGastroesophageal reflux disease (GERD), which leads to acid reflux into the esophagus, is a common gastrointestinal disorder. Several studies have shown the prevalence of GERD in Iranian population, but their evidence is contradictory. Therefore, the present study was conducted to investigate the epidemiology of GERD in Iran.

methodsThe entire steps of this systematic review and meta-analysis were based on the MOOSE protocol, and the results were reported accordance with the PRISMA guideline. This review is registered on PROSPERO (registration number: CRD42020142861). To find potentially relevant published articles, comprehensive search was done on international online databases Scopus, Science Direct, EMBASE, PubMed/Medline, CINAHL, EBSCO, Cochrane Library, Web of Science, Iranian online databases and the Google Scholar search engine in June 2019. Cochran test and I

resultsThe daily, weekly, monthly, and overall prevalence of GERD symptoms in Iranian population was 5.64% (95%CI [confidence interval]: 3.77-8.35%; N = 66,398), 12.50% (95%CI: 9.63-16.08%; N = 110,388), 18.62% (95%CI: 12.90-26.12%; N = 70,749) and 43.07% (95%CI: 35.00-51.53%; N = 73,189), respectively. The daily, weekly, monthly, and overall prevalence of heartburn in Iranian population was 2.46% (95%CI: 0.93-6.39%; N = 18,774), 9.52% (95%CI: 6.16-14.41%; N = 54,125), 8.19% (95%CI: 2.42-24.30%; N = 19,363) and 23.20% (95%CI: 13.56-36.79%; N = 26,543), respectively. The daily, weekly, monthly, and overall prevalence of regurgitation in Iranian population was 4.00% (95%CI: 1.88-8.32%; N = 18,774), 9.79% (95%CI: 5.99-15.60%; N = 41,140), 13.76% (95%CI: 6.18-44.31%; N = 19,363) and 36.53% (95%CI: 19.30-58.08%; N = 21,174), respectively. The sensitivity analysis for prevalence of all types GERD, heartburn and regurgitation symptoms by removing a study showed that the overall estimate is still robust.

conclusionThe present meta-analysis provides comprehensive and useful information on the epidemiology of GERD in Iran for policy-makers and health care providers. This study showed a high prevalence of GERD in Iran. Therefore, effective measures on GERD-related factors such as lifestyle can be among the health policies of Iran.

Indexed as

Gastroesophageal RefluxHeartburnDatabases, FactualHumansIranPrevalenceEpidemiologyGastroesophageal reflux diseaseIranMeta-analysis

Identifiers

PMID32928126
PMCPMC7488684

What OpenQuestion holds

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LicenceCC BY
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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.