Fig. 1

Kaplan-Meier analysis (estimates) of the disease free survival (DFS) of GEO datasets using the seven-lncRNA signature. The Kaplan-Meier plots were used to visualize the DFS probabilities for the patients based on the risk score evaluation. a Kaplan–Meier curves for GSE39582 training-group patients (N = 279); b Kaplan–Meier curves for GSE39582 internal validation-group patients (N = 278); c Kaplan–Meier curves for the entire GSE39582 patients (combined training and validation group patients, N = 557). d Kaplan–Meier curves for the external validation GSE19538 patients (N = 200). The tick marks on the curves represent the censored events. The differences between the two curves were determined by the two-sided log-rank test