Table 2. Clinical and biochemical data according to the nutritional status (N = 137).

Variable a	Boys (N = 137)
	Normal (n = 71)	Ow/obese (n = 66)	p value b
Age (yr)	10.13 (0.28)	10.82 (0.30)	0.093
Body-mass index (kg/m2)	17.20 (2.10)	24.30 (5.60)	<0.0001
Log serum iron (μmol/L)	0.79 (0.01)	0.80 (0.01)	0.694
Log serum TIBC (μmol/L) c	1.04 (0.00)	1.04 (0.00)	0.960
Log serum ferritin (pmol/L)	8.89 (0.18)	9.32 (0.13)	0.068
Log transferrin saturation (%)	3.24 (0.05)	3.27 (0.05)	0.701
Log hepcidin (ng/ml)	4.43 (0.08)	4.29 (0.10)	0.291
Log interleukin-1β (pg/ml)	0.11 (0.08)	0.49 (0.46)	0.044
Log interferon-γ (pg/ml)	1.55 (0.09)	1.46 (0.78)	0.554
Log nitric oxide (μM)	1.40 (0.11)	1.97 (0.09)	0.031
Log interleukin-10 (pg/ml)	1.44 (10.24)	1.07 (10.19)	0.401
Log testosterone (nmol/L)	0.10 (0.02)	0.50 (0.08)	0.005

^a Mean (standard deviation).

^b According to an unpaired Student’s t-test.

^c TIBC, total iron-binding capacity.

Ow, overweight.