Table 2—

Correlations between circulating soluble TfR and clinical and biochemical variables

	All subjects* (n = 221)	P
Age	0.12	0.08
BMI	0.10	0.1
Waist†	0.03	0.6
Systolic blood pressure	0.15	0.02
Diastolic blood pressure	0.11	0.09
Fasting glucose	0.13	0.12
30′ OGTT	0.21	0.01
120′ OGTT	0.17	0.04
A1C	0.14	0.03
Fasting insulin	0.12	0.1
30′ OGTT insulin	0.19	0.02
120′ OGTT insulin	0.08	0.3
Triglycerides	0.005	0.9
HDL cholesterol	0.01	0.7
S_I	−0.32	0.001
C-reactive protein	0.18	0.01

*
↵* OGTT was performed in 138 subjects; 30′, 60′, 90′, and 120′ indicate the minutes after glucose intake.
†
↵† Waist was negatively correlated with sTfR in subjects with altered glucose tolerance (r = −0.26; P = 0.04). Bold values are statistically significant.