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. 2019 Mar 27;14:719–728. doi: 10.2147/COPD.S194922

Figure 2.

Figure 2

ROC curves of our model (solid line and closed circles) and GOLD risk assessment criterion (history of ≥1 exacerbation leading to hospitalization in the previous year, dashed line and open circles) for identifying high-risk patients in (A) the derivation cohort and (B) the independent multicenter validation cohort.

Abbreviations: GOLD, Global Initiative for Chronic Obstructive Lung Disease; ROC, receiver operating characteristics.