INS and type 2 diabetes mellitus: One hundred thirty patients (31.5%) had T1DM, and 283 (68.5%) had T2DM, with median (IR) ages of 25 (21–42.25) and 56 (50–62) years, median (IR) diabetes durations of 10.0 (7–17) and 15.0 (9–20) years, and median lengths of insulin use of 10.0 and 5.0 years, respectively.