Survival prediction analysis. a: K-M survival curves for two SWVg-predicted subgroups (63 miRNAs; TCGA data). b: K-M survival curves for three SWVg-predicted subgroups (84 miRNAs; TCGA data). c and d: the K-M survival curves generated from the 19 miRNA prognostic classifier using TCGA and Shih’s data respectively. e and f: K-M survival curves for three SWVg-predicted subgroups (31 miRNAs) using TCGA and Shih’s data respectively. g, h and i: K-M survival curves predicted by DDSS-1D based on the expression levels of the miRNA-324-5p in the training (g), test (h) and independent Shih’s (i) datasets. P-value (see Additional file 1: Methods) is presented in the top-right of the K-M survival curves. Overall survival (OS) time events were analyzed.