F2 and chronic kidney disease: Similarly for dialysis, six independent risk factors were found: stage 3A (p = 0.010), stage 3B (p < 0.001), stage 4 (p < 0.001), and stage 5 CKD (p < 0.001), DM (p = 0.039), shock (p < 0.001), and longer prothrombin time (p = 0.019) (Table 3).