Kaplan-Meier plot. Kaplan-Meier survival curve illustrating correlation between Egr-1 score (frequency of Egr-1 positive cancer cell nuclei in tumor mass) and progression to stage T2-T4 bladder cancer. Information from 244 patients was included. P = 0.035, log rank test. Total number of events were 96, with 33 events in Egr-1 negative, 44 events in low Egr-1 and 19 invents in moderate/high Egr-1.