Table 3.

Results of multiple regression analysis on oxidative stress-related markers

Target variable	Explanatory variable	Parameter estimates						Model conformity
		Estimate	SE	t value	p	Standard β		Adjusted R2	p
STAS	Uric acid	42.849	3.642	11.766	<0.0001	0.541		0.463	<0.0001
	Folic acid	1.646	0.470	3.504	0.001	0.138
	Vitamin A	0.890	0.276	3.218	0.001	0.138
	Valine	0.299	0.120	2.040	0.013	0.112
8-OHdG	Age	0.052	0.009	5.644	<0.0001	0.202		0.100	<0.0001
	Ferritin	0.005	0.001	4.789	<0.0001	0.173
	Drinking	–0.762	0.160	–4.770	<0.0001	–0.173
	Vitamin Eα	–0.090	0.023	–3.857	<0.0001	–0.136
Isoprostane	Vitamin Eα	–0.062	0.013	–4.722	<0.0001	–0.217		0.079	<0.0001
	γ-GT	0.004	0.001	2.703	0.007	0.128
	Ferritin	0.002	0.001	2.573	0.010	0.119
	Smoking	0.266	0.119	2.239	0.026	0.100