20/(fasting C-peptide × fasting plasma glucose) is a simple and effective index of insulin resistance in patients with type 2 diabetes mellitus: a preliminary report

Table 4 Partial correlation coefficients between 20/(F-CPR × FPG) and GIR adjusted for the use of hypoglycemic drugs/diet therapy

Hypoglycemic drug/diet therapy	All patients		GIR 5–10 mg·kg^–1·min^–1
	(n= 15)		(n = 10)
	Partial r	P	Partial r	P
All drugs	0.854	< 0.0001	0.917	< 0.0001
Biganide	0.830	< 0.0001	0.902	< 0.0001
Sulfonylurea	0.839	< 0.0001	0.949	< 0.0001
DPP4 inhibitor	0.834	< 0.0001	0.896	< 0.0001
Glinide	0.833	< 0.0001	0.886	< 0.0001
α-GI	0.793	0.001	0.889	< 0.0001
Diet therapy alone	0.854	< 0.0001	0.917	< 0.0001

Correlations between 20/(F-CPR × FPG) and GIR were adjusted for all drugs or for individual drugs.
DPP4 dipeptidyl peptidase 4, GI glucosidase inhibitor.

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