Comparison of AKI incidence among KDIGO, RIFLE and AKIN Criteria KDIGO (1) RIFLE (2) AKIN (3) AKI n (%) 120 (48.58%) 98 (39.67%) 116 (46.96%) p p1 - 2 = 0.04 p2 - 3=0.10 p1 - 3=0.71 11 - The AKI incidence, according to KDIGO, was higher than those of AKIN and RIFLE (48.58% vs 46.96% and 39.67% respectively).