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The comparison of receiver operating characteristic (ROC) curves for smoking-induced noncommunicable diseases (SiNCDs) prediction in the KNHANES and NHANES datasets. (a) ROC of SVM-RFE based models in KNHANES; (b) ROC of SVM-RFE based models in NHANES; (c) ROC of RFFS based models in KNHANES; (d) ROC of RFFS based models in NHANES; (e) ROC of HFS based models in KNHANES; (f) ROC of HFS based models in NHANES.
