INS and type 2 diabetes mellitus: Among all other categories, the classical T2D group showed a higher number of patients on insulin in combination with glucose-lowering medication, with significantly higher HbA1C (Kruskal Wallis test, p = 0.001), abnormal lipid profile (Kruskal Wallis test, p < 0.05), and the second highest use of statins (Chi-Square test, p = 0.800).