Fig. 4

Kaplan-Meier estimates of the disease free survival (DFS) of GEO patients using the 24-lncRNA signature, stratified by lymph node ratio (LNR). Entire GSE62254 set (N = 300) were first stratified by LNR (LNR ≥ 16.7 % or LNR < 16.7 %). Kaplan-Meier plots were then used to visualize the survival probabilities for the high-risk versus low-risk group of patients determined on the basis of the median risk score from the entire GSE62254 set patients within each LNR stratum. a Kaplan-Meier curves for the entire GSE62254 set patients (N = 300); (b) Kaplan-Meier curves for patients LNR ≥16.7 % (N = 139); (c) Kaplan-Meier curves for patients LNR < 16.7 % (N = 161). The tick marks on the Kaplan-Meier curves represent the censored subjects. The differences between the two curves were determined by the two-sided log-rank test