Fig. 3

Cumulative survival rates of 104 patients with UICC stage II–III CRC. The overall survival of the CRC patients was assessed using the Kaplan–Meier method, and differences in the survival rates were determined using the log-rank test. Based on the ROC curve of the miR expression level, CRC patients were divided into low and high expression subgroups. (a–e) Overall survival was significantly worse in CRC patients in the low miR-7 (a, P = 0.021), miR-141 (c, P = 0.004), and miR-494 (e, P = 0.013) expression subgroups and the high miR93 (b, P = 0.030) and miR-195 (d, P = 0.047) expression subgroups. f No significant differences were observed in let-7B between the high and low expression subgroups (P = 0.123)