Red Blood Cell Distribution Width Predicts Pulmonary Hypertension Secondary to Chronic Obstructive Pulmonary Disease

Figure 3

(a–c) ROC analysis for RDW, BNP, and PA : A predicting PH in COPD. (a) ROC curve with the RDW at identifying PH. The AUC was 0.749 ± 0.054 (). The optimal cutoff value of RDW for predicting PH was 14.65 and had a sensitivity and a specificity value of 69.2% and 82.8%, respectively. (b) ROC curve with the BNP level at identifying PH. The AUC was 0.837 ± 0.044. The optimal cutoff value of BNP for predicting PH was 146.105 and had a sensitivity and a specificity value of 82.1% and 86.8%, respectively. (c) ROC curve with PA : A at identifying PH. The AUC was 0.857 ± 0.035 ().The optimal cutoff value of PA : A for predicting PH was 0.925 and had a sensitivity and a specificity value of 79.5% and 82.8%, respectively. ROC, receiver operating characteristics; RDW, red blood cell distribution width; AUC, areas under the curve; BNP, brain natriuretic peptide; PH, pulmonary hypertension.

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