INS and Hypertension: The participants with a prolonged QTc interval were older (59.4 ± 10.1 years vs 55.5 ± 10.6 years, P = .002), were more likely to be a woman (72.2% vs 51.7%, P = .001), had a higher prevalence of hypertension (46.7% vs 33.4%, P = .022), had a higher systolic blood pressure (129.0 ± 23.2 mm Hg vs 121.8 ± 15.1 mm Hg, P < .001), had a higher 2-hour postprandial glucose level (273.2 ± 85.7 vs 243.9 ± 78.9 mg/dL, P = .004), had a higher HbA1c level (8.8% ± 2.2% vs 8.2% ± 1.8%, P = .045), and had a higher rate of insulin use (42.2% vs 22.4%, P < .001).