Fig. 2

Kaplan–Meier survival estimates according to high (MAI ≥ 10) or low (MAI < 10) proliferation measured by the mitotic activity index (MAI) in tissue from operable breast cancer patients. a and b) MAI status in all patients (n = 191) with median 15.3 years of follow-up. c and d) MAI status in patients (n = 144) who did not experience disease recurrence or died during the first 5 years after surgery. In this case, the first 5 years were subtracted from all survival times prior to analysis