Table 2.

Correlation coefficients of the OGTT- and clamp-derived insulin secretion and insulin sensitivity indices [25, 26]

	All	T2D
SSIHGC
p 14	0.90	0.74
p 14 *	0.83	0.65
HOMA-β	0.67	0.56
II index	0.77	0.53
Insulin0-120 (AUC)	0.80	0.64
GIR/SSIHIC
p G3	0.56	0.60
p G3 *	0.51	0.52
HOMA-R	0.42	0.29
QUICKI	0.44	0.36
Matsuda index	0.32	0.30
OGIS120	0.41	0.22

The p _I4 * and p _G3 * were obtained without pre-processing the OGTT data. To derive an index of the OGIS₁₂₀, glucose and insulin concentrations at 90 min during the OGTT are necessary in addition to the present input (4 blood samples during the 2-h OGTT) [26]. Here, interpolated G ₍₉₀₎ and I ₍₉₀₎ were used for the derivation of the indices