ArticleBMJ open respiratory research2022
Small airway function measured using forced expiratory flow between 25% and 75% of vital capacity and its relationship to airflow limitation in symptomatic ever-smokers: a cross-sectional study.
Article in BMJ open respiratory research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis 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
12 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- Can measures of small airway dysfunction aid with the diagnosis or management of asthma exacerbations? A systematic review.BMJ open respiratory research · 2025Pooled it
- The silent zone of paediatric asthma: integrating small airway dysfunction assessment into clinical practice.EClinicalMedicine · 2026Review
- Small Airway Dysfunction in Chronic Obstructive Pulmonary Disease Pathology: Assessment and Clinical Implications.Tuberculosis and respiratory diseases · 2026Article
- The Influence of Smoking on Respiratory Function in Medical Students at the University of Medicine, Pharmacy, Science and Technology of Târgu-Mureș.Biomedicines · 2026Article
- Risk Factors for Acute Exacerbation in Patients with COPD Group E in Ningbo: Risk Analysis of Irregular Review, Cardiovascular Complications, and Lung Function Decline.International journal of chronic obstructive pulmonary disease · 2025Article
- Application of Impulse Oscillometry Combined with Fractional Exhaled Nitric Oxide in Monitoring Asthma Control Levels in Children.Journal of asthma and allergy · 2025Article
- Analysis of the correlations and inconsistencies between spirometry and impulse oscillometry in the diagnosis of small-airway dysfunction.BMC pulmonary medicine · 2024Article
- Association of Small Airway Functional Indices With Respiratory Symptoms and Comorbidity in Asthmatics: A National Cross-Sectional Study.Journal of clinical medicine research · 2024Article
- Fixed Airflow Obstruction in Asthma Can Be Identified Early by Low FEF25-75% and is Associated with Environmental Exposure.Journal of asthma and allergy · 2024Article
- Small airways dysfunction: The importance of utilising Z-scores to define MMEF abnormalities in clinical practice.Heliyon · 2023Article
- Impact of AerobikaFrontiers in medicine · 2023Article
- The prevalence of bronchodilator responsiveness of the small airway (using mid-maximal expiratory flow) in COPD - a retrospective study.BMC pulmonary medicine · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundChronic obstructive pulmonary disease (COPD) is diagnosed and its severity graded by traditional spirometric parameters (forced expiratory volume in 1 s (FEV
methodA retrospective analysis of lung function data of 1458 ever-smokers suspected clinically of having COPD. Low FEF
resultsLow FEF
conclusionsLow FEF
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.