Table 6.

Pearson correlations (r) between log-transformed second-trimester and cord blood hormone levels, prepregnancy body mass index (BMI), gestational weight gain, birth weight for gestational age z score, and BMI z score

		Second-trimester, mother		Cord blood, infant		Mother		Infant
		Leptin	Adiponectin	Leptin	Adiponectin	Prepregnancy BMI	GWG	BW/GA z	BMI z
Second-trimester leptin	r	1.00
	P
	N	(n = 1022)
Second-trimester adiponectin	r	-0.13	1.00
	P	< .0001
	N	(n = 1022)	(n = 1025)
Cord blood leptin	r	0.14	–0.13	1.00
	P	.002	.005
	N	(n = 460)	(n = 461)	(n = 597)
Cord blood adiponectin	r	0.05	0.05	0.38	1.00
	P	.29	.27	< .0001
	N	(n = 466)	(n = 467)	(n = 597)	(n = 606)
Prepregnancy BMI	r	0.55	–0.31	0.12	0.01	1.00
	P	< .0001	< .0001	.004	.76
	N	(n = 1019)	(n = 1022)	(n = 594)	(n = 603)	(n = 1180)
Total gestational wt gain	r	0.19	0.10	0.03	–0.02	-0.25	1.00
	P	< .0001	.002	.40	.70	< .0001
	N	(n = 1010)	(n = 1013)	(n = 587)	(n = 596)	(n = 1168)	(n = 1168)
Birth wt for GA z score	r	0.07	–0.09	0.37	0.11	0.09	0.17	1.00
	P	.03	.003	< .0001	.01	.001	< .0001
	N	(n = 1021)	(n = 1024)	(n = 597)	(n = 606)	(n = 1179)	(n = 1167)	(n = 1183)
BMI for GA z score	r	0.10	–0.10	0.40	0.16	0.08	0.15	0.79	1.00
	P	.01	.02	< .0001	< .0001	.03	< .0001	< .0001
	N	(n = 591)	(n = 594)	(n = 339)	(n = 342)	(n = 670)	(n = 663)	(n = 672)	(n = 672)

Abbreviations: BMI, body mass index; BW, birth weight; GA, gestational age; GWG, gestational weight gain.