Event-free and overall survival of all patients separated by prognostic factors.

Kaplan-Meier estimates of the proportion of patients alive (B) and event-free (A), analyzed by intent to treat at a median follow-up of 43 months and separated into 3 risk groups based on Cox regression analysis. The 3 prognostic factors associated with event-free survival were B symptoms before ICE, extranodal disease before ICE, and CR duration less than 1 year. Group A has 0 to 1 factor (+), group B has 2 factors (○), and group C has 3 factors (▿) (see Table 4).P < .001.