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A study on the validity and reliability of the Turkish version of the Clinical Chronic Obstructive Pulmonary Disease
Betul Taspinar1, Umran Erbay2, Ferruh Taspinar1
1Department of Physiotherapy and Rehabilitation, Faculty of Health Science, Izmir Democracy University, Izmir, Turkey.
Background:
Chronic obstructive pulmonary disease (COPD) is a progressive disease negatively affecting health-related quality of life. The related scales in Turkish are limited in number and generalizability.
Objective:
To perform validity and reliability studies of the Turkish version of the Clinical Chronic Obstructive Pulmonary Disease Questionnaire (CCQ).
Methods:
This study was conducted at the Department of Chest Diseases, with 100 volunteer COPD patients with a mean age of 67.72 ± 9.78 years. After obtaining the necessary permission, translation procedures were applied for Turkish cultural adaptation. Finally, a single Turkish translation was created, and this questionnaire was evaluated by linguists. Incomprehensible items were corrected in a pilot study. Baseline and test-retest measurements after two weeks were performed. Internal consistency analysis was made for validity, and correlations were calculated with the 36-Item Short Form Health Survey (SF-36), the modified Medical Research Council (mMRC) Dyspnea Scale and Respiratory Function Tests (RFTs).
Results:
Cronbach's alpha value was found to be 0.90 for the first obtained data and 0.91 for the second obtained data. There was similarity at the rate of 0.97 between the first and second measurements in terms of total scores of the CCQ. The questionnaire significantly correlated with the SF-36, mMRC and RFTs (-0.85 ⩽r⩽ 0.69, p< 0.05).
Conclusions:
As a result of this study, the Turkish version of CCQ was determined to be reliable and valid. The CCQ is an easy-to-use questionnaire in terms of application-calculation and can be safely used for the clinical assessment and monitoring of patients.
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