Evidence map›Paper›PMID 38273271›Full record

SynthesisBMC public health2024

Estimating the global prevalence of chronic obstructive pulmonary disease (COPD): a systematic review and meta-analysis.

Nadia Al Wachami, Morad Guennouni, Younes Iderdar, Karima Boumendil, Maryem Arraji, Yassmine Mourajid, Fatima Zahra Bouchachi, Mohamed Barkaoui, Mohamed Lahbib Louerdi, Abderraouf Hilali and 1 more

Open access · goldAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in BMC public health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers, 14 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed, 14 pooled it
57.8field-weighted citation impact, top 1% 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

114 citing papers in PubMed, 14 syntheses or guidelines pooled it, 138 citations in OpenAlex.

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  11. Multi-Ancestry Mendelian Randomization Reveals Lipid-Associated Genetic Risk Factors for COPD.International journal of chronic obstructive pulmonary disease · 2025
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  13. Effects ofFrontiers in pharmacology · 2024
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54 more citing papers are in PubMed but not listed here.

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

11 authors at 2 institutions in 1 country.

Nadia Al WachamiHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco. n.alwachami@uhp.ac.ma.
Morad GuennouniHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Younes IderdarHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Karima BoumendilHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Maryem ArrajiHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Yassmine MourajidHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Fatima Zahra BouchachiHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Mohamed BarkaouiHigher Institute of Sport, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Mohamed Lahbib LouerdiProvincial delegation of health, 26000, Settat, Morocco.
Abderraouf HilaliHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Mohamed ChahbouneHigher Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Hassan First University of Settat, 26000, Settat, Morocco.
Université Hassan 1er · MANational School of Business and Management in Settat · MA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is a major public health problem. The present study aims to provide a global and regional estimate of the prevalence of COPD based on spirometry according to the two most widely used diagnostic criteria of COPD: fixed ratio (FR) and lower limit of normal (LLN).

methodsWe conducted a systematic review of the literature according to PRISMA guidelines. MEDLINE, Web of Sciences, and Scopus databases were searched to identify studies on the spirometry-based prevalence of COPD in individuals aged 40 years and older. The meta-analysis was performed using MedCalc 19 software.

resultsIn total, 42 of the 3393 studies reviewed were eligible for inclusion. The overall prevalence of COPD in people aged 40 years and older was 12.64% (95% CI 10.75%-14.65%) and 7.38% (95% CI 5.47% - 9.55%) based on FR and LLN criteria, respectively. By gender, men had a higher prevalence of COPD compared to women (15.47%; 95% CI 12.22%-19.02% for men versus 8.79%; 95% CI 6.94%-10.82% for women). Using the LLN criteria, the prevalence of COPD in both sexes was almost identical (8.67%; 95% CI 8.44%- 8.90% for men and 8.00%; 95% CI 6.42% - 9.73% for women). We reported a high prevalence of COPD among smokers and the elderly by both definitions of airway obstruction. Regional prevalence estimates using the FR definition indicate that the highest COPD prevalence was recorded in the Americas and the lowest was recorded in the Eastern Mediterranean region. Using the LLN definition, the highest prevalence was recorded in the Southeast Asian region and the lowest prevalence was recorded in the American region. The most common COPD stage was stage II, with a prevalence of 50.46%. The results indicate a huge lack of prevalence data in the African and Eastern Mediterranean region. The results were given using a random-effect model due to the high heterogeneity between studies.

conclusionResults show that the prevalence of COPD differs according to the diagnostic criteria used. In addition, management and prevention strategies targeting risk factors for COPD are certainly needed to reduce the global burden of this chronic respiratory disease.

Indexed as

Airway ObstructionPulmonary Disease, Chronic ObstructiveAdultAgedFemaleForced Expiratory VolumeHumansMaleMiddle AgedPrevalenceRisk FactorsSpirometryChronic obstructive pulmonary diseasemeta-analysisPrevalenceSpirometry

Identifiers

PMID38273271
PMCPMC10811845
OpenAlexW4391218969

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.