ArticleOpen respiratory archives
Predictors of Progression in Pre-COPD: The 3P Study Rationale and Design.
Article in Open respiratory archives. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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
1 citing paper in PubMed.
- Small Airway Disease in Pre-COPD and Early COPD: Insights Into the Pulmonary "Silent Zone".International journal of chronic obstructive pulmonary disease · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
18 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: The diagnosis of chronic obstructive pulmonary disease (COPD) requires the demonstration of poorly reversible airflow obstruction (defined by a forced expiratory volume in 1 s [FEV Material and methods: This will be a prospective (5-year follow-up), multicenter (conducted in 12 Spanish centers across eight geographical autonomous communities), observational, comparative study (www.clinicaltrials.govNCT04409275), that will recruit 285 current or former smokers (≥10 pack-years) with respiratory symptoms (dyspnea, chronic cough, sputum production, wheezing or recurrent lower respiratory tract infections) and spirometry without obstruction (pre-COPD status). Multivariate regression analysis and other tests will be used to analyze results. Conclusion: Results are expected to provide novel, useful information for identifying pre-COPD individuals who are likely to develop progressive airflow obstruction and are potential candidates for prompt intervention.
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.