Indian Journal of Respiratory Care (Jan 2020)

Psychometric analysis of the bengali clinical chronic obstructive pulmonary disease questionnaire

  • Aniruddha Banerjee,
  • Laijun Nahar,
  • Showket Ahmad Bhat,
  • Ashutosha Kumar,
  • Rachna Goenka,
  • Pralay Sharma,
  • Swapan Paul,
  • Abhijit Chattopadhyay,
  • Sk Swaif Ali,
  • James Michael,
  • Munmun Koley,
  • Subhranil Saha

DOI
https://doi.org/10.4103/ijrc.ijrc_19_19
Journal volume & issue
Vol. 9, no. 1
pp. 40 – 46

Abstract

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Background: The Clinical Chronic Obstructive Pulmonary Disease Questionnaire Bengali version (CCQ-B) is a prevalidated, patient-administered, 10-item questionnaire assessing symptom severity (SS) and quality of life in adults suffering from chronic obstructive pulmonary diseases (COPDs). To date, no validated Bengali version of the questionnaire is available. We aimed to translate it into Bengali and examine its psychometric properties. Methods: The CCQ-B was produced by standardized forward–backward translations. A cross-sectional study was conducted to gather responses by consecutive sampling. Reliability was examined using internal consistency (n = 110) and test–retest reliability (n = 30) analyses, concurrent validity by comparing with COPD Assessment Test questionnaire scores, while construct validity by exploratory principal component analysis (varimax rotation; n = 110). Subsequently, confirmatory factor analysis (CFA; n = 110) was performed to verify the model fit of the a priori identified scales. Results: The internal consistency (Cronbach's α) for overall CCQ-B was 0.746, indicating acceptable reliability. Satisfactory values of test–retest reliability and concurrent validity were found. On factor analyses, all the items loaded above the prespecified value of 0.3. Varimax rotation identified three components (SS, health and social life, and depression and limitation of activities), explaining 58.2% of variation. The Kaiser–Meyer–Olkin was 0.734 and Bartlett's test of sphericity was also significant. Goodness-of-fit of the three-component model in CFA was mediocre, but acceptable. Conclusion: The CCQ-B, consisting of 10 items and framed within three components, is a valid and reliable questionnaire but measured different dimensions from the English version.

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