Differential miRNA expression in sera from NSCLC patients (cancer) and healthy controls (normal) in test set.

Diff, differential expression between the two miRNAs, calculated as the difference between Ct values of the two indicated miRNAs. PPV, positive predictive value; NPV, negative predictive value; SENS, sensitivity; and SPEC, specificity. The cutoff value used in training set was applied in the test set.