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.Diff为两种微小核糖核酸（microRNA，简称miRNA）的差异表达量，计算方式为所指定的两种miRNAs的Ct值之差。PPV即阳性预测值（positive predictive value）；NPV即阴性预测值（negative predictive value）；SENS即灵敏度（sensitivity）；SPEC即特异性（specificity）。训练集所采用的截断值将被应用于测试集。