Table 1. Clinical, anthropometric and metabolic characteristics of the study participants.

Variables	Total samplen = 1061	Clamp samplen = 49	P-value
Age (years)	35 (25–47)	40 (29–47)	0.056
Body mass index (kg/m²)	26.8 (23.4–31.4)	26.7 (23.1–32.5)	0.821
Waist circumference (cm)	90.5 (80.5–100.6)	92.0 (81.7–104.0)	0.344
Systolic blood pressure (mmHg)	117 (110–122)	112 (105–120)	0.584
Diastolic blood pressure (mmHg)	80 (70–80)	80 (70–88)	0.350
Triglycerides (mg/dl)	94 (69–129)	95 (57–123)	0.401
Total cholesterol (mg/dl)	184 (158–210)	190 (164–202)	0.863
LDL cholesterol (mg/dl)	110 (89–131)	109 (86–124)	0.575
HDL cholesterol (mg/dl)	50 (43–60)	53 (46–63)	0.111
Fasting Glucose (mg/dl) *	82 (76–90)	89 (81–96)	0.001
Fasting Insulin (mU/l) *	8.5 (5.7–13.0)	7.0 (4.3–12.1)	0.043
HOMA1-IR	1.70 (1.1–2.7)	1.55 (0.94–2.65)	0.176
Adiponectin (μg/ml)	3.57 (2.43–5.57)	3.30 (1.97–5.10)	0.078
HOMA-AD	0.47 (0.24–0.89)	0.48 (0.24–0.98)	0.882
Gamma-glutamyltransferase (U/l)*	19.0 (14.0–27.0)	15.0 (12.0–22.0)	0.015
C-reactive protein (mg/dl)	0.27 (0.13–0.69)	0.27 (0.08–0.46)	0.208

The data are presented as the median (percentiles 25–75).