After adjustment for male sex, age, previous coronary artery disease, procedure (EVT vs. bypass surgery), below-the-knee artery disease, and ulcer/gangrene as covariates with p < 0.05 in a univariate analysis, a decreased GNRI [adjusted HR 1.78, 95% CI 1.24–2.59, p = 0.0016 for T1 vs. T3] and elevated CRP (adjusted HR 1.86, 95% CI 1.30–2.70, p = 0.0007 for T3 vs. T1) were identified as independent predictors of amputation and/or mortality (Table 3). Here, CRP is linked to gangrene.