Figure 1

Bland–Altman plots for mean mainPetCO2 versus PaCO2 (A) and mean microPetCO2 versus PaCO2 (B) for all patients, mainPetCO2 and PaCO2 for the patients with mild to moderate pulmonary disease (C), microPetCO2 and PaCO2 for the patients with mild to moderate pulmonary disease (D), mainPetCO2 and PaCO2 for the patients with severe pulmonary disease (E), microPetCO2 and PaCO2 for the patients with severe pulmonary disease (F). The mean difference is represented as a continuous line, and 95% limits of agreement are represented as dotted lines.