Fig. 2

Kaplan–Meier curve for recurrence-free survival (RFS), stratified by AR mRNA expression level. Green line: RFS curve for high AR mRNA expression level group; blue line: RFS for low AR mRNA expression level group. The high AR mRNA-expressing group tended to have a longer median RFS (not reached) than did the low-AR group (9.04 months; P = 0.112)