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We compared midterm prognostic predictors of peripheral artery disease (PAD) with or without diabetes mellitus (DM) presenting with critical lower limb ischemia (CLI). A total of 172 patients with PAD (109 DM; 63 non-DM) were enrolled. The major adverse events (MAEs) were death or amputation. The diabetic group had a higher MAE rate (39% vs 22%, P = .042) with a mean follow-up duration of 30 ± 19 months. In a multivariate binary logistic regression analysis, revascularization (odds ratio = 0.289, P = .006) and higher serum cholesterol (odds ratio=0.988, P = .027) predicted a lower MAE rate in the DM group. In contrast, the presence of severe chronic kidney disease (stage 4 or 5, odds ratio = 5.238, P = .025) was a positive predictor of MAEs in the nondiabetic group. In conclusion, the prognostic predictors of MAE in diabetic and nondiabetic patients with PAD and CLI were different.