The low-ABI group had a significantly higher prevalence of DM (57.1% vs. 29.5%; p = 0.044) and elevated median CRP levels (0.26 [IQR: 0.23–1.16] vs. 0.20 [IQR: 0.15–0.24] mg/dL; p = 0.001) and smoking (p = 0.037) compared with the normal-ABI group. Here, CRP is linked to diabetes mellitus.