Fig. 4: Correlation plots.
From: Measuring burden of disease in both asthma and COPD by merging the ACQ and CCQ: less is more?
Correlation plot showing the correlation between the ACQ and the OLD-Q in asthma patients in secondary cohort (A) and primary cohort (B) and the correlation between the CCQ and the OLD-Q in COPD patients in secondary cohort (C) and primary cohort (D). The Pearson correlation coefficient (R-score) was respectively 0.93 (A), 0.94 (B), 0.94 (C), and 0.93 (D).
