Figure 3From: Course of COPD assessment test (CAT) and clinical COPD questionnaire (CCQ) scores during recovery from exacerbations of chronic obstructive pulmonary disease Correlations between CAT and CCQ scores at onset of exacerbation. Correlation of scores in the global population R = 0.748 (p < 0.0001), in outpatient exacerbations R = 0.788 (p < 0.0001) and in inpatient exacerbations R = 0.723 (p < 0.0001).Back to article page