Subject characteristics including the fasting state- and OGTT-derived indices of insulin release (N = 1364).

*Seventeen subjects with calculated negative values in one or more of the twelve insulin secretion indices tested were excluded (N = 1347). AUC – area under the curve; BMI – body mass index; CIR – cleared insulin response; DI – disposition index; HOMA-B – homeostasis model assessment of beta-cell function; IFG – impaired fasting glycaemia; IGI – insulinogenic index; IGT – impaired glucose tolerance; NGT – normal glucose tolerance; OGTT – oral glucose tolerance test.