Waist-to-hip ratio is the most relevant obesity index at each phase of insulin secretion among obese patients.

We aimed to explore the relationship between different obesity indices and insulin secretion at each phase among obese subjects and to find out the most relevant obesity index. Height, weight, waist circumstance, and hip circumstance were obtained among 419 obese subjects to calculate body mass index (BMI), waist-to-hip ratio (WHR), waist-to-height ratio, body adiposity index (BAI), conicity index, abdominal volume index and a body shape index (ABSI). Fasting plasma glucose and fasting insulin were detected to calculate HOMA-β.