Table 3.

Correlation of leptin and sLEPR in maternal serum and cord blood with selected variables

Variable	Maternal leptin		Cord leptin		Maternal sLEPR		Cord sLEPR
	r*	P	r*	P	r*	P	r*	P
Mothers
Pre-pregnancy BMI	0.32	< 0.001	0.01	0.882	-0.18	0.048	0.001	0.986
Prenatal BMI	0.34	< 0.001	0.07	0.483	-0.26	0.004	0.01	0.846
Weight gain	0.29	< 0.001	0.12	0.197	-0.15	0.108	0.07	0.389
Gestational age	-0.14	0.119	0.11	0.231	-0.03	0.716	-0.13	0.165
Placental weight	0.17	0.059	0.20	0.034	-0.03	0.780	0.03	0.785
Belly circumference	0.28	0.002	-0.04	0.621	-0.11	0.218	0.09	0.314
Leptin levels	---	---	0.21	0.026	-0.09	0.311	0.42	< 0.001
sLEPR levels	-0.09	0.332	0.11	0.248	---	---	0.29	0.002
Newborns
Birthweight	0.04	0.675	0.30	0.001	0.05	0.604	0.12	0.203
Length	-0.02	0.827	0.30	0.001	0.04	0.706	0.06	0.484
Head circ.	0.21	0.024	0.15	0.114	0.13	0.162	0.23	0.019
Thoracic circ.	0.11	0.235	0.34	< 0.001	0.07	0.434	0.13	0.160
Abdominal circ.	0.07	0.451	0.27	0.003	0.12	0.182	0.10	0.268
Leptin levels	0.21	0.026	---	----	0.11	0.236	0.14	0.121
sLEPR levels	0.42	< 0.001	0.14	0.130	0.29	0.002	---	---

BMI: body mass index, Head circ: head circumference, Thoracic circ: thoracic circumference, Abdominal circ: abdominal circumference, sLEPR: soluble leptin receptor.

^*Spearman correlation coefficient.