Incidence and Risk Factors of Postoperative Pulmonary Complications in Noncardiac Chinese Patients: A Multicenter Observational Study in University Hospitals

Figure 2

Receiver operating characteristic (ROC) curves drawn for the current model and previous index (Canet’s) in cohort 2. -statistic for the area under the ROC curve (AUC) = 0.90 (95% CI, 0.86 to 0.94) drawn from the current index and AUC = 0.76 (95% CI, from 0.68 to 0.83) drawn from the previous index.