Observational studyBMJ open respiratory research2025
Association of respiratory symptom profiles with future exacerbations and lung function decline in mild-to-moderate COPD.
Observational study in BMJ open respiratory research, 2025. 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
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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.
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Who cites it
1 citing paper in PubMed.
- Deep Learning Image Reconstruction Algorithm for Quantitative Assessment of Low-Dose Biphasic Chest CT in Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2026Article
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Authors and funding
18 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe prognostic value of respiratory symptom profiles for predicting exacerbation risk and lung function decline remains unclear in mild-to-moderate chronic obstructive pulmonary disease (COPD). RESEARCH QUESTION: Are respiratory symptom profiles associated with both exacerbation risk and lung function decline in mild-to-moderate COPD? STUDY DESIGN AND
methodsThis was a posthoc analysis of data from participants with mild-to-moderate COPD from the SubPopulations and InteRmediate Outcome Measures in COPD Study. Respiratory symptom profiles were identified through latent class analysis. Outcomes included exacerbation rates evaluated by zero-inflated negative binomial regressions, time-to-first exacerbation evaluated by Cox regression and longitudinal forced expiratory volume in 1 second (FEV
resultsAmong the 954 participants with mild-to-moderate COPD, five distinct respiratory symptom profiles were identified. Compared with the 'minimal respiratory' profile, the 'productive cough' profile was associated with a higher rate of any respiratory exacerbations (relative ratio [RR] 1.84; 95% confidence interval [CI] 1.29 to 2.64) and severe respiratory exacerbations (RR 2.05; 95% CI 1.12 to 3.74). Similarly, the 'Wheeze' profile was associated with higher rates of any (RR 1.55; 95% CI 1.12 to 2.15) and severe exacerbations (RR 1.73; 95% CI 1.00 to 2.98). The 'nearly all respiratory symptoms' profile was associated with a higher rate of exacerbations (any exacerbation: RR 2.12; 95% CI 1.56 to 2.89; severe exacerbations: RR 2.07; 1.23 to 3.47) and an accelerated annual FEV
interpretationRespiratory symptom profiles identifies distinct prognostic outcomes in mild-to-moderate COPD. The productive cough is associated with increased exacerbation risk, while the dry cough is associated with a lower lung function trajectory. TRIAL REGISTRATION NUMBER: NCT0196934.
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