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Figure 3 | BMC Pulmonary Medicine

Figure 3

From: Assessing health status in COPD. A head-to-head comparison between the COPD assessment test (CAT) and the clinical COPD questionnaire (CCQ)

Figure 3

Bland and Altman plots for the relation between subdomains of the SGRQ and CCQ. SGRQ = St George’s Respiratory Questionnaire, CCQ = Clinical COPD Questionnaire. CCQ scores by 17.67(adjCCQ). Right Y ax shows the original CCQ scale. Orange line is the regression line. Dashed lines represent the 95% confidence interval. Straight line represents the bias.

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