Reliability and Validity of the Chinese Version of the Chronic Respiratory Questionnaire (CCRQ) in Patients with COPD

ObjectiveThe chronic respiratory questionnaire (CRQ) is used by occupational therapists to measure patients' quality of life in pulmonary rehabilitation programmes in Hong Kong. In this study, we developed the Chinese version of the chronic respiratory questionnaire (CCRQ), and investigated its content validity and reliability.MethodsA forward and backward translation method was adopted, with detailed analysis of the relevance, importance and linguistic equivalence by an expert panel. Test-retest reliability and internal consistency of the CCRQ were assessed on 37 and 118 local Chinese chronic obstructive pulmonary disease patients from multicentres, respectively.ResultsIt was found that the content validity of the CCRQ was supported by the opinions from the respiratory experts. The degrees of agreement in the linguistic analyses were high for all items including the activity list and the rating scale. Strong test-retest correlations and high internal consistency were found in the reliability testing.ConclusionThe CCRQ is a valid and reliable instrument for measuring the health status of patients with chronic respiratory diseases in the local population.