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Receiver operating characteristic curves displaying Sybil's ability to predict future lung cancer over 6 years following a single low-dose computed tomography from the (A) NLST, (B) MGH, and (C) CGMH test sets. CIs for each curve can be found in Table 1. AUC, area under the curve; C-index, concordance index; CGMH, Chang Gung Memorial Hospital; MGH, Massachusetts General Hospital; NLST, National Lung Screening Trial.
