Evidence map›Paper›PMID 30761687›Full record

ArticleRespirology (Carlton, Vic.)2019

Reduced mortality from lower respiratory tract disease in adult diabetic patients treated with metformin.

Angelico Mendy, Radha Gopal, John F Alcorn, Erick Forno

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Respirology (Carlton, Vic.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 3 pooled it
7.3field-weighted citation impact, top 2% 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

33 citing papers in PubMed, 3 syntheses or guidelines pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Observational
  6. Senotherapy for chronic lung disease.Pharmacological reviews · 2025
    Review
  7. Article
  8. Article
  9. Impact of metabolic and weight components on incident asthma using a real-world cohort.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2024
    Article
  10. Article
  11. Hyperglycaemia and Chronic Obstructive Pulmonary Disease.Diagnostics (Basel, Switzerland) · 2023
    Review
  12. Metformin Use Is Associated With Lower Mortality in Veterans With Diabetes Hospitalized With Pneumonia.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  13. Article
  14. Comorbidities in childhood-onset and adult-onset asthma.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2022
    Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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 1 country.

Angelico MendyCollege of Public Health, University of Iowa, Iowa City, IA, USA.ORCID 0000-0002-8227-6830
Radha GopalDivision of Pulmonary Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
John F AlcornDivision of Pulmonary Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
Erick FornoDivision of Pulmonary Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.ORCID 0000-0001-6497-9885
University of Pittsburgh · USUniversity of Iowa · US

Funding

Influenza A Inhibits TH17 Host Defense Against Bacterial PneumoniaR01HL107380 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ALCORN, JOHN F · 2012 to 2024
$5.4M
Obesity and Asthma Subphenotypes and Underlying Genetic and Genomic PathwaysK08HL125666 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI FORNO, ERICK · 2015 to 2018
$589k
NHLBI NIH HHS K08 HL125666NHLBI NIH HHS R01 HL107380
6 · The paper itself

Abstract

BACKGROUND AND

objectiveChronic lower respiratory diseases (CLRD) increase the risk of type 2 diabetes, which in turn may worsen lung function. Metformin, a common antidiabetic with anti-inflammatory and antioxidant properties, may improve respiratory outcomes. Therefore, we examined the association of metformin use with the risk of mortality from CLRD.

methodsWe analysed data from the National Health and Nutrition Examination Survey during 1988-1994 and 1999-2010 for participants aged 40 years or older who had diabetes and were followed up for mortality through 2011. Information on prescription medicine was collected at baseline and CLRD-related mortality during follow-up was defined using the 10th Revision of the International Classification of Diseases (ICD-10). Cox proportional hazards modelling was used to determine the mortality hazard ratio (HR) associated with metformin use, adjusting for relevant covariates.

resultsA total of 5266 participants with a median follow-up of 6.1 years were included. The prevalence of metformin use was 31.9% and 1869 participants died during follow-up, including 72 of CLRD. In the adjusted Cox proportional regression analysis, metformin was associated with a decreased risk of CLRD mortality in the overall population (HR: 0.39, 95% CI: 0.15-0.99) and among participants with baseline CLRD (HR: 0.30, 95% CI: 0.10-0.93), after adjusting for age, gender, race/ethnicity, cigarette smoking, body mass index, current asthma and chronic obstructive pulmonary disease (COPD), insulin and other diabetic medications, and glycohaemoglobin level. We found no association between other antidiabetic medications and CLRD mortality.

conclusionIn this sample representative of the U.S. population, metformin was associated with lower CLRD mortality in adults with diabetes.

Indexed as

Nutrition SurveysAdultAgedCross-Sectional StudiesDiabetes Mellitus, Type 2FemaleFollow-Up StudiesHumansHypoglycemic AgentsMaleMetforminMiddle AgedRespiratory Tract DiseasesSurvival RateTime FactorsUnited StatesHypoglycemic AgentsMetforminasthmachronic obstructive pulmonary diseasediabetesmetforminmortality

Identifiers

PMID30761687
PMCPMC6579707
OpenAlexW2914705146

What OpenQuestion holds

Texttitle and abstract
LicenceTDM
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.