Fig. 4.

The Kaplan-Meier survival curves, stratified into low- and high-risk patient groups, of the common cases in the progression analysis cohort included in Fig. 2. The estimated survival curves for the low-risk group (n = 52) and high-risk group (n = 53) are shown in blue and red, respectively, with shaded areas representing the 95% confidence intervals. The P values were obtained by application of the log-rank test to the two survival curves. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)