ArticleInternational journal of chronic obstructive pulmonary disease2016
The COPD assessment test and St George's Respiratory Questionnaire: are they equivalent in subjects with COPD?
Article in International journal of chronic obstructive pulmonary disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 3 of them syntheses 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
18 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Patient-reported outcome measures for use in patients with alpha-1-antitrypsin deficiency: results of a systematic selection process.BMJ open respiratory research · 2025Pooled it
- Mepolizumab for Eosinophil-Associated COPD: Analysis of METREX and METREO.International journal of chronic obstructive pulmonary disease · 2021Pooled it
- A systematic review and meta-analysis of Liuzijue in stable patients with chronic obstructive pulmonary disease.BMC complementary medicine and therapies · 2020Pooled it
- Early Clinically Important Improvement (ECII) and Exacerbation Outcomes in COPD Patients.International journal of chronic obstructive pulmonary disease · 2020Trial
- Dyspnea in Chronic Obstructive Pulmonary Disease: Expert Assessment of Management in Clinical Practice.Pulmonary therapy · 2025Article
- Health status, respiratory symptom and dyspnea trajectories in subjects with chronic obstructive pulmonary disease: a seven-year observation in clinical practice.Journal of patient-reported outcomes · 2025Observational
- Prognostic Factors for Responders of Home-Based Pulmonary Rehabilitation-Secondary Analysis of a Randomized Controlled Trial.Healthcare (Basel, Switzerland) · 2025Article
- High burden of symptoms reported among patients diagnosed with chronic obstructive pulmonary disease (COPD) in Greenland after introducing the COPD Assessment Test in clinical practice.International journal of circumpolar health · 2023Article
- The impact of the duration of the integrated disease management program on COPD-related outcomes.European journal of medical research · 2023Article
- Differences of Clinical Characteristics and Drug Prescriptions between Men and Women with COPD in China.Toxics · 2023Article
- A randomised controlled trial of non-invasive ventilation compared with extracorporeal carbon dioxide removal for acute hypercapnic exacerbations of chronic obstructive pulmonary disease.Annals of intensive care · 2022Article
- Age-Dependent Associations Between 25-Hydroxy Vitamin D Levels and COPD Symptoms: Analysis of SPIROMICS.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2021Article
- Are in Person and Telephone Interviews Equivalent Modes of Administrating the CAT, the FACIT-FS and the SGRQ in People With COPD?Frontiers in rehabilitation sciences · 2021Article
- Comparative analysis of the psychometric parameters of two quality-of-life questionnaires, the SGRQ and CAT, in the assessment of patients with COPD exacerbations during hospitalization: A multicenter study.Chronic respiratory disease · 2018Observational
- Depressive status explains a significant amount of the variance in COPD assessment test (CAT) scores.International journal of chronic obstructive pulmonary disease · 2018Observational
- Sociodemographic and clinical factors affecting the quality of life of patients with chronic obstructive pulmonary disease.International journal of chronic obstructive pulmonary disease · 2018Observational
- Nitrogen single-breath washout test for evaluating exercise tolerance and quality of life in patients with chronic obstructive pulmonary disease.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2018Article
- Health status of COPD patients undergoing pulmonary rehabilitation: A comparative responsiveness of the CAT and SGRQ.Chronic respiratory disease · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe chronic obstructive pulmonary disease (COPD) assessment test (CAT) is a short questionnaire that has facilitated health status measurements in subjects with COPD. However, it remains controversial as to whether the CAT can be used as a suitable substitute for the St George's Respiratory Questionnaire (SGRQ). This study investigated the reliability and score distributions of the CAT and SGRQ and evaluated which factors contributed to health status for each questionnaire.
methodsA total of 109 consecutive subjects with stable COPD from a single center were enrolled in this study. Each subject completed pulmonary function tests, exercise tests, and the following self-administered questionnaires: the Baseline Dyspnea Index, the Hospital Anxiety and Depression Scale, the CAT, and SGRQ.
resultsInternal consistencies of CAT and SGRQ total scores were both excellent (Cronbach's α coefficients =0.890 and 0.933). Statistically significant correlations were observed between CAT and SGRQ total scores (R=0.668, P<0.001). Correlations of CAT scores with parameters related to pulmonary function, dyspnea, exercise performance, and psychological factors were inferior to correlations with those parameters with SGRQ total scores. Both multiple regression analyses and principal component analyses revealed that there were slight differences between SGRQ total scores and CAT scores.
conclusionThe CAT is similar to SGRQ in terms of discriminating health status. However, we demonstrated that what is assessed by the CAT may differ slightly from what is measured by SGRQ.
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.