ArticleAmerican journal of respiratory and critical care medicine2020
Exercise Tolerance according to the Definition of Airflow Obstruction in Smokers.
Article in American journal of respiratory and critical care medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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
13 citing papers in PubMed, 17 citations in OpenAlex.
- Mortality among people with airflow limitation according to the fixed ratio criterion but not the lower limit of normal criterion.Journal of thoracic disease · 2026Article
- Joint statement from GOLD/GLI regarding the use of spirometry to define airflow obstruction and diagnose COPD.The European respiratory journal · 2026Article
- Four decades applying clinical physiology to respiratory medicine: a personal account of occasional certainties and perennial doubts.Respiratory research & clinical practice · 2026Article
- Tiotropium in Patients With Airflow Limitation According to the Fixed Ratio But Not the Lower Limit of Normal: A Secondary Analysis of the Tiotropium in Early-COPD Study.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2025Article
- Wasted ventilation in mild COPD: protocol for a clinical physiology and functional imaging study.ERJ open research · 2025Article
- Lung function: what constitutes (ab)normality?Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2022Article
- Spirometry for the diagnosis of airway obstruction in patients with risk factors for COPD: the GOLD and lower limit of normal criteria.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2022Observational
- Update in Chronic Obstructive Pulmonary Disease 2020.American journal of respiratory and critical care medicine · 2021Article
- The ratio FEVClinical physiology and functional imaging · 2021Article
- Absence of airflow obstruction on spirometry: can it still be COPD?Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2021Article
- Defining Airflow Obstruction: More Data, Further Clarity.American journal of respiratory and critical care medicine · 2020Article
- Dyspnea and Exercise Limitation in Mild COPD: The Value of CPET.Frontiers in medicine · 2020Review
- What is the true burden of chronic obstructive pulmonary disease in India and what are its implications at a national level?Lung India : official organ of Indian Chest SocietyArticle
Corrections and comments
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Authors and funding
9 authors at 4 institutions in 2 countries.
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.