Fig. 4From: Growth characteristics of early-stage (IA) lung adenocarcinoma and its value in predicting lymph node metastasisReceiver-operating characteristic curves. Reference line: (AUC 0.5); VDTt: volume doubling time of the whole nodule (AUC 0.860); MDTt: mass doubling time of the whole nodule (AUC 0.848). AUC: area under the curveBack to article page