MKI67 and neoplasm: The final multivariate model, including covariates with p value < 0.15 other than those that compose the PEPI score (tumour staging, baseline Ki-67, study, adjuvant chemotherapy and PEPI score), showed that PEPI group III was associated with significantly worse RFS (p = 0.007, hazard ratio = 3.33 [1.39; 7.98]).