INS and type 1 diabetes mellitus: Compared with patients with complete insulin-deficient T1DM, TP patients were older (62.59 ± 10.41 vs 44.01 ± 17.22 years, P < 0.001) with shorter diabetes duration (20 vs 132 months, P < 0.001) but similar BMI (20.33 ± 2.39 vs 20.92 ± 1.76 kg/m2, P = 0.079).