Table 3. Coefficient of variation and discriminant ratio index-wise and per group.

		Index	CoV mean1	CoV sd2	DR (95% CI)3
Insulin secretion	fasting	HOMA2-B C-peptide	0.108	0.080	1.69 (1.39–2.07)
		CGR	0.134	0.101	2.18 (1.84–2.63)
		HOMA2-B Insulin	0.142	0.116	1.58 (1.28–1.96)
		group4	0.128	0.099	1.82 (1.50–2.22)
	OGTT	AUC C-peptide 0-120/AUC Glucose 0–120	0.113	0.097	2.13 (1.79–2.57)
		AUC C-peptide 0–120	0.127	0.095	2.28 (1.93–2.74)
		AUC C-peptide 0-30/AUC Glucose 0–30	0.155	0.157	1.71 (1.41–2.09)
		AUC C-peptide 0–30	0.160	0.157	1.79 (1.48–2.18)
		AUC Insulin 0-120/AUC Glucose 0–120	0.161	0.112	2.52 (2.14–3.01)
		AUC Insulin 0-30/AUC Glucose 0–30	0.198	0.158	1.76 (1.45–2.14)
		IGI	0.273	0.233	0.57 (0.23–0.86)
		DI	0.288	0.252	0.12 (0–0.53)
		group	0.184	0.158	2.03 (1.30–2.02)
Insulin sensitivity	fasting	revised QUICKI	0.028	0.021	1.97 (1.65–2.39)
		QUICKI	0.044	0.036	1.94 (1.62–2.34)
		HOMA2-S C-peptide	0.149	0.117	1.97 (1.65–2.39)
		HOMA2-S Insulin	0.210	0.173	1.40 (1.12–1.75)
		group	0.108	0.087	1.82 (1.51–2.22)
	OGTT	OGIS	0.065	0.051	1.99 (1.67–2.40)
		Belfiore	0.112	0.096	1.52 (1.23–1.87)
		NEFA-ISI	0.128	0.085	2.70 (2.30–3.22)
		Gutt	0.173	0.140	1.24 (0.97–1.56)
		Matsuda-ISI	0.188	0.150	2.16 (1.82–2.59)
		group	0.133	0.104	1.92 (1.59–2.33)

¹ mean coefficient of variation.

² standard deviation of the coefficient of variation.

³ discriminant ratio with the corresponding 95% confidence interval.

⁴ representing the mean values for each group (insulin secretion fasting, insulin secretion OGTT, insulin sensitivity fasting, insulin sensitivity OGTT).