Observational studyRespiratory research2019
Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study.
Observational study in Respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 4 papers.
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.
Systemic Consequences and Comorbidities in Mild/Moderate COPD, Time for Action!
Echographic Characteristics of DIaphragm and FEmoral Quadriceps in COPD Patients: Evaluation of Their Relationship With the Lung Function Impairment and the Effect of Pulmonary Rehabilitation
Who cites it
4 citing papers in PubMed, 10 citations in OpenAlex.
- Shall we go for a walk? A cross-sectional study comparing the 6 min walk test and cardiopulmonary exercise test for assessing cardiorespiratory fitness in de novo kidney transplant recipients.BMJ open sport & exercise medicine · 2026Article
- Physical activity pattern of patients with interstitial lung disease compared to patients with COPD: A propensity-matched study.PloS one · 2022Article
- Serum Acylglycerols Inversely Associate with Muscle Oxidative Capacity in Severe COPD.Medicine and science in sports and exercise · 2021Article
- Circulating Biomarkers of Handgrip Strength and Lung Function in Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundPatients with COPD need to cope with a disabling disease, which leads to health status impairment.
aimTo investigate the long term change of health status in subjects with mild to moderate airflow obstruction and to compare this to subjects without airflow obstruction, with and without a smoking history. Second, to investigate the factors potentially associated to rapid health status decline in our total cohort.
methodsTwo hundred and one subjects were included. Generic [Short form 36 health survey (SF36) and EuroQol - 5 dimensions (EQ-5D)] and disease specific [Clinical COPD questionnaire (CCQ) and COPD Assessment Test (CAT)] health status questionnaires were regularly repeated over a six years period. Other functional outcomes comprised measures of lung function, physical fitness, physical activity and emotional state.
resultsOn average, health status decline did not differ between groups with the exception of the EQ-5D index, which deteriorated faster in subjects with airflow obstruction compared to the never smoking control group [- 0.018(0.008) versus 0.00006(0.003), p = 0.03]. Subjects presenting at least one exacerbation had faster rate of deterioration measured with CAT [0.91(0.21) versus - 0.26(0.25), p < 0.01]. Characteristics of the fast declining group were older age, worse lung function, physical fitness, physical activity and disease specific baseline health status. Subjects with airflow obstruction had a 2.5 (95% CI 1.36-4.71) higher risk of presenting fast overall health status decline. Fast overall decline was associated with the presence of acute exacerbation(s) (44% of the subjects with exacerbation(s) versus 17% of subjects without exacerbation, p = 0.03). Changes in fat free mass, functional exercise capacity and in symptoms of anxiety and depression correlated weakly to changes in health status measured with all questionnaires.
conclusionSubjects with mild airflow obstruction present a significant deterioration of health status, which is generally not much faster compared to smoking and never smoking controls. Subjects with fast decline in overall health status are older and more likely to have airflow obstruction, acute respiratory exacerbation(s), reduced physical fitness, physical activity and impaired COPD specific health status at baseline.
trial registrationNCT01314807 - retrospectively registered on March 2011.
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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.