Sample size calculation
CKD STAGE 3
After reviewing the literature [So, 2 groups of patients were allocated; Group 1 included 60 patients with CKD stage 3 undergoing PCI using Febuxostat in addition to traditional treatment and Group 2 with same underlying conditions and received traditional treatment only 24 h before the procedure.Block randomization was used in this clinical trial design to reduce bias and achieve balance in the allocation of participants to treatment arms and it was open label.