Validity and reliability of a quality-of-life instrument: the chronic respiratory disease questionnaire.


A pilot study was done to evaluate criterion-related validity and test-retest reliability of the Chronic Respiratory Disease Questionnaire (CRQ). The CRQ examines how chronic obstructive pulmonary disease (COPD) effects quality of life, and evaluates four dimensions: dyspnea, fatigue, emotional function, and mastery. The pilot study did not establish… (More)


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