Validity of the COPD Assessment Test Translated Into Local Languages for Asian Patients

Kwon, Namhee; Amin, Muhammad; Hui, David S.; Jung, Ki‐Suck; Lim, Seong Yong; Ta, Huu Duy; Thai, Thi Thuy Linh; Yunus, Faisal; Jones, Paul

doi:10.1378/chest.12-0535

Cited by 45 publications

(39 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study, the validity of the Japanese version of the CAT was first confirmed in a well-characterized cohort of COPD patients, since previous studies demonstrated that the SGRQ scores also tended to be lower in Japanese COPD patients than in patients in Western countries [15]. It was found that the CAT performed in a very similar manner to that reported recently in other Asian countries [25]. The mean score of the COPD patients was slightly lower than in studies in other countries [8,11], but the present population had a higher mean %FEV 1 compared to those studies, so they were likely to have had milder disease.…”

Section: Discussionsupporting

confidence: 65%

Analysis of comorbid factors that increase the COPD assessment test scores

et al. 2014

View full text Add to dashboard Cite

BackgroundThe chronic obstructive pulmonary disease (COPD) Assessment Test (CAT) is a concise health status measure for COPD. COPD patients have a variety of comorbidities, but little is known about their impact on quality of life. This study was designed to investigate comorbid factors that may contribute to high CAT scores.MethodsAn observational study at Keio University and affiliated hospitals enrolled 336 COPD patients and 67 non-COPD subjects. Health status was assessed by the CAT, the St. Georges Respiratory Questionnaire (SGRQ), and all components of the Medical Outcomes Study Short-Form 36-Item (SF-36) version 2, which is a generic measure of health. Comorbidities were identified based on patients’ reports, physicians’ records, and questionnaires, including the Frequency Scale for the Symptoms of Gastro-esophageal reflux disease (GERD) and the Hospital Anxiety and Depression Scale. Dual X-ray absorptiometry measurements of bone mineral density were performed.ResultsThe CAT showed moderate-good correlations with the SGRQ and all components of the SF-36. The presence of GERD, depression, arrhythmia, and anxiety was significantly associated with a high CAT score in the COPD patients.ConclusionsSymptomatic COPD patients have a high prevalence of comorbidities. A high CAT score should alert the clinician to a higher likelihood of certain comorbidities such as GERD and depression, because these diseases may co-exist unrecognized.Trial registrationClinical trial registered with UMIN (UMIN000003470).

show abstract

Section: Discussionsupporting

confidence: 65%

Analysis of comorbid factors that increase the COPD assessment test scores

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The Cronbach’s alpha value is excellent, and the instrument has good test-retest reliability and a high correlation with the SGRQ in American patients [20]. Positive correlations among the CAT, SGRQ, and MRC were found in Korean and Asian COPD patients [22,23] and in patients with ILD in a Japanese study with 55 patients, 15 of whom had IPF [21]. …”

Section: Methodsmentioning

confidence: 99%

Validation of the COPD Assessment Test (CAT) in patients with idiopathic pulmonary fibrosis

Grufstedt

Shaker

Konradsen

2018

European Clinical Respiratory Journal

View full text Add to dashboard Cite

Introduction: Idiopathic pulmonary fibrosis (IPF) is a chronic disease with high morbidity and mortality. A reliable and manageable questionnaire that assesses patients’ quality of life is needed to help to improve the content of clinical consultations. The chronic obstructive pulmonary disease (COPD) Assessment Test (CAT) is used in clinical practice; therefore, the aim of this study was to investigate correlations among the CAT, St. George’s Respiratory Questionnaire (SGRQ) and clinical parameters among patients diagnosed with IPF.Methods: A retrospective cohort design was employed in which 87 patients diagnosed with IPF who were receiving treatment at an outpatient clinic were included.Results: The CAT was found to be significantly correlated with SGRQ (p < 0.001). Furthermore, the CAT was significantly correlated with all of the included physiological variables.Conclusions: This add to support the validity of the COPD Assessment test (CAT) as a measure of symptoms in patients with IPF which in clinical practice in combination with dialogue between healthcare professionals and the patient, can help to improve the content of a clinical consultation.

show abstract

“…[25]; and mMRC score [9,27,37]. The CAT score was not statistically different (po0.05) in the following categories: sex [11,20,21,29]; age (defined as f65 years versus .65 years) [20,29]; current smokers versus nonsmokers [23]; and comorbidities (defined as 0, 1-2 or o3 comorbidities) [20,25]. COPD: chronic obstructive pulmonary disease; ICC: intra-class correlation coefficient; NR: not reported; NA: not applicable.…”

Section: ##mentioning

confidence: 99%

The COPD assessment test: a systematic review

et al. 2014

View full text Add to dashboard Cite

The COPD assessment test (CAT) is a self-administered questionnaire that measures healthrelated quality of life. We aimed to systematically evaluate the literature for reliability, validity, responsiveness and minimum clinically important difference (MCID) of the CAT.Multiple databases were searched for studies analysing the psychometric properties of the CAT in adults with chronic obstructive pulmonary disease. Two reviewers independently screened, selected and extracted data, and assessed methodological quality of relevant studies using the COSMIN checklist.From 792 records identified, 36 studies were included. The number of participants ranged from 45 to 6469, mean age from 56 to 73 years, and mean forced expiratory volume in 1 s from 39% to 98% predicted. Internal consistency (reliability) was 0.85-0.98, and test-retest reliability was 0.80-0.96. Convergent and longitudinal validity using Pearson's correlation coefficient were: SGRQ-C 0.69-0.82 and 0.63, CCQ 0.68-0.78 and 0.60, and mMRC 0.29-0.61 and 0.20, respectively. Scores differed with GOLD stages, exacerbation and mMRC grades. Mean scores decreased with pulmonary rehabilitation (2.2-3 units) and increased at exacerbation onset (4.7 units). Only one study with adequate methodology reported an MCID of 2 units and 3.3-3.8 units using the anchor-based approach and distribution-based approach, respectively. Most studies had fair methodological quality.We conclude that the studies support the reliability and validity of the CAT and that the tool is responsive to interventions, although the MCID remains debatable. @ERSpublications Studies support the reliability, validity and responsiveness of the CAT as a HRQoL tool but its MCID remains unclear

show abstract

Validity of the COPD Assessment Test Translated Into Local Languages for Asian Patients

Cited by 45 publications

References 23 publications

Analysis of comorbid factors that increase the COPD assessment test scores

Analysis of comorbid factors that increase the COPD assessment test scores

Validation of the COPD Assessment Test (CAT) in patients with idiopathic pulmonary fibrosis

The COPD assessment test: a systematic review

Contact Info

Product

Resources

About