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. 2019 Oct 25;10(10):e00098. doi: 10.14309/ctg.0000000000000098

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© 2019 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The American College of Gastroenterology

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 4. — Receiver operating characteristic curve for malignancy detection sensitivity and specificity in the external validation cohort: (1) ROC curve of clinical factors alone; (2) ROC curve of the ΔCT value (Zhou et al. (23)); (3) ROC curve of the ΔCT value combined with clinical factors; (4) ROC curve of radiological features; and (5) ROC curve of radiological features combined with clinical factors (our novel diagnostic model). AUC, area under the receiver operating characteristic curve; CT, computed tomography; ROC, receiver operating characteristic.