Table 3 Linear regression analysis of baseline selenoprotein P concentrations with clinical parameters at baseline.

Parameters at baseline	SELENOP concentration at baseline (n = 76)		Selenium concentration at baseline (n = 44)
Parameters at baseline	p value	r	p value	r
Age	0.028*	0.252	0.001**	0.501
Body weight	0.177	−0.157	0.217	−0.190
BMI (kg/m²)	0.721	−0.042	0.225	0.187
Waist Circumference (cm)	0.844	−0.023	0.029*	0.329
Fasting plasma glucose (mg/dl)	0.092	0.194	0.102	0.250
Plasma glucose 30 min (mg/dl)	0.036*	0.241	0.716	0.056
Plasma glucose 60 min (mg/dl)	0.004**	0.326	0.373	0.138
Plasma glucose 120 min (mg/dl)	0.797	0.030	0.866	−0.026
Fasting IRI (µU/ml)	0.498	−0.079	0.694	0.061
IRI 30 min (µU/ml)	0.261	−0.130	0.046*	−0.302
IRI 60 min (µU/ml)	0.107	0.187	0.932	−0.013
IRI 120 min (µU/ml)	0.874	−0.018	0.216	−0.190
HbA1c (%)	0.331	0.113	0.571	0.088
HOMA-IR	0.723	−0.041	0.501	0.104
Insulinogenic index	0.010*	−0.293	0.070	−0.276
AST (IU/L)	0.737	−0.039	0.021	−0.347
ALT (IU/L)	0.472	−0.084	0.089	−0.259
Triglyceride (mg/dl)	0.970	0.004	0.426	−0.123

^*p < 0.05, **p < 0.01.
BMI, body mass index; IRI, immunoreactive insulin; HbA1c, glycosylated hemoglobin; HOMA-IR, homeostasis model assessment of insulin resistance; AST, aspartate aminotransferase; ALT, alanine aminotransferease; SELENOP, selenoprotein P.

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