INS and digestive system neoplasm: No gender-specific differences were observed in the other indexes of insulin sensitivity either based on fasting measurements such as QUICKI, and homeostasis model assessment insulin resistance (HOMA-IR) or derived by OGTT including liver insulin resistance (liver IR) index, glucose0–30 (AUC) × insulin0–30 (AUC) index, Stumvoll Insulin Sensitivity Index (ISI), Gutt’s ISI0,120, and Matsuda index.