Table 2.

Multivariate regression analysis to identify factors independently associated with the plasma XOR activity.

	Model 1		Model 2		Model 3
	Adjusted R2		Adjusted R2		Adjusted R2
	R2 = 0.664		R2 = 0.642		R2 = 0.200
	β	p	β	p	β	p
Age	0.076	0.235	0.039	0.568	0.086	0.877
Sex	− 0.073	0.262	− 0.079	0.211	− 0.155	0.104
BMI	− 0.017	0.373	0.036	0.604	0.015	0.904
HbA1c	− 0.055	0.622	− 0.037	0.559	0.012	0.909
UA	0.034	0.807	0.1	0.123	0.099	0.342
Fasting IRI	0.024	0.743	0.096	0.165	0.775	< 0.001
HOMA-IR	− 0.019	0.785	0.047	0.468	− 0.43	0.019
TG	0.161	0.01	–	–	0.037	0.72
AST	0.365	0.003	0.325	0.011	–	–
ALT	0.465	< 0.001	0.509	< 0.001	–	–

Multiple regression analysis to determine factors independently associated with the plasma xanthine oxidase activity. Plasma xanthine oxidase activity was included as a dependent variable, and age, sex, body mass index, HbA1c, uric acid, fasting IRI and HOMA-IR were used as common explanatory variables.

We also included TG, AST and ALT as explanatory variables in model 1, AST and ALT in model 2, and TG in model 3.