ACE and diabetes mellitus: When LMT score was considered as a dependent variable, and age, educational level, diabetes duration, hypertension duration, FBG, blood lipid levels, and serum ACE activity were considered as independent variables in the multiple stepwise regression analysis, the results indicated that the LMT score was significantly associated with educational level, TC, and serum ACE activity (β = 0.265, p = 0.003; β = −0.205, p = 0.020; β = −0.186, p = 0.035, respectively; Table 3).