INS and diabetes mellitus: At baseline, HbA1c had a significant correlations with TGDS (r = 0.26, p = 0.001, 95%CI 0.11 to 0.41), duration of DM (r = 0.24, p = 0.003, 95%CI 0.09 to 0.39), MNA score (r = −0.24, p = 0.003, 95%CI −0.39 to −0.08) and using insulin.