ArticleThe international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease2020
Effect of chronic obstructive pulmonary disease and smoking on the outcome of COVID-19.
Article in The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 18 of them syntheses that pooled 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.
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.
Who cites it
66 citing papers in PubMed, 18 syntheses or guidelines pooled it, 96 citations in OpenAlex.
- Dipeptidyl peptidase-4 (DPP-IV) inhibitor was associated with mortality reduction in COVID-19 - A systematic review and meta-analysis.Primary care diabetes · 2022Pooled it
- Effect of colchicine on mortality in patients with COVID-19 - A systematic review and meta-analysis.Diabetes & metabolic syndrome · 2022Pooled it
- Pre-existing health conditions and severe COVID-19 outcomes: an umbrella review approach and meta-analysis of global evidence.BMC medicine · 2021Pooled it
- Effect of heart failure on the outcome of COVID-19 - A meta analysis and systematic review.The American journal of emergency medicine · 2021Pooled it
- Visceral adiposity, subcutaneous adiposity, and severe coronavirus disease-2019 (COVID-19): Systematic review and meta-analysis.Clinical nutrition ESPEN · 2021Pooled it
- Tricuspid annular plane systolic excursion (TAPSE) measured by echocardiography and mortality in COVID-19: A systematic review and meta-analysis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021Pooled it
- Prognostic performance of troponin in COVID-19: A diagnostic meta-analysis and meta-regression.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021Pooled it
- Body mass index and outcome in patients with COVID-19: A dose-response meta-analysis.Diabetes & metabolism · 2021Pooled it
- Thrombocytopenia as a prognostic marker in COVID-19 patients: diagnostic test accuracy meta-analysis.Epidemiology and infection · 2021Pooled it
- Elevated De Ritis Ratio Is Associated With Poor Prognosis in COVID-19: A Systematic Review and Meta-Analysis.Frontiers in medicine · 2021Pooled it
- The Risk of COVID-19 Related Hospitalsation, Intensive Care Unit Admission and Mortality in People With Underlying Asthma or COPD: A Systematic Review and Meta-Analysis.Frontiers in medicine · 2021Pooled it
- Impact of the Coronavirus Disease Pandemic on the Number of Strokes and Mechanical Thrombectomies: A Systematic Review and Meta-Analysis.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2020Pooled it
- The Use of Therapeutic-Dose Anticoagulation and Its Effect on Mortality in Patients With COVID-19: A Systematic Review.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/HemostasisPooled it
- The Effect of Metformin Consumption on Mortality in Hospitalized COVID-19 patients: a systematic review and meta-analysis.Diabetes & metabolic syndromePooled it
- C-reactive protein, procalcitonin, D-dimer, and ferritin in severe coronavirus disease-2019: a meta-analysis.Therapeutic advances in respiratory diseasePooled it
- The use of renin angiotensin system inhibitor on mortality in patients with coronavirus disease 2019 (COVID-19): A systematic review and meta-analysis.Diabetes & metabolic syndromePooled it
- Charlson comorbidity index and a composite of poor outcomes in COVID-19 patients: A systematic review and meta-analysis.Diabetes & metabolic syndromePooled it
- Elevated interleukin levels are associated with higher severity and mortality in COVID 19 - A systematic review, meta-analysis, and meta-regression.Diabetes & metabolic syndromePooled it
- Impact of Smoking and Deprivation in Patients Admitted With Severe COVID-19 Infection to ICU: A Retrospective Cohort Study.Interdisciplinary perspectives on infectious diseases · 2025Article
- Handgrip strength as a prognostic factor for COVID-19 mortality among older adult patients admitted to the intensive care unit (ICU): a comparison Alpha (B.1.1.7) and Delta (B.1.617.2) variants.Scientific reports · 2024Article
6 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.