Fig. 4. Receiver operating characteristic (ROC) curves of predictors of lung cancer lymph node metastasis. ROC curves of (A) cytology, (B) methionyl-tRNA synthetase (MRS)/CD45 immunofluorescence (IF), and (C) the combination of cytology, positron emission tomography (PET), and MRS/CD45 IF were created using core biopsy results as a reference value. lr.eta, linear predictor eta; PV(+), positive predictive value; PV(−), negative predictive value; s.e., standard error; est., estimates.
