. Author manuscript; available in PMC: 2015 Apr 20.

Published in final edited form as: JAMA. 2012 Jan 25;307(4):391–397. doi: 10.1001/jama.2011.2034

Table 2.

Concentrations of PFCs in Serum From Birth Cohort Mothers and Their Children at Age 5 Years and Correlations Pairwise and With the PCB Concentration in Maternal Serum

	PFC Concentration, Geometric Mean (IQR), ng/mL	Pairwise Pearson Correlations at Age 5 y
Compound	PFC Concentration, Geometric Mean (IQR), ng/mL	PCB	PFOS	PFOA	PFHxS	PFNA	PFDA
Maternal PFCs
PFOS	27.3 (23.2 to 33.1)	0.24	0.27	0.05	0.07	0.14	0.07

PFOA	3.20 (2.56 to 4.01)	−0.03	0.06	0.19	0.03	−0.02	−0.06

PFHxS	4.41 (2.24 to 8.43)	0.05	0.28	0.01	0.11	−0.01	0.03

PFNA	0.60 (0.46 to 0.79)	0.55	0.23	0.03	0.14	0.32	0.20

PFDA	0.28 (0.22 to 0.38)	0.48	0.28	0.01	0.13	0.30	0.20

PFCs at age 5 y
PFOS	16.7 (13.5 to 21.1)	0.08	1

PFOA	4.06 (3.33 to 4.96)	0.00	0.50	1

PFHxS	0.63 (0.45 to 0.88)	0.07	0.57	0.53	1

PFNA	1.00 (0.76 to 1.24)	0.29	0.48	0.54	0.34	1

PFDA	0.28 (0.21 to 0.38)	0.14	0.39	0.35	0.22	0.78	1

Abbreviations: IQR, interquartile range; PCB, polychlorinated biphenyl; PFC, perfluorinated compound; PFDA, perfluorodecanoate; PFHxS, perfluorohexane sulfonic acid; PFNA, perfluorononanoate; PFOA, perfluorooctanoic acid; PFOS, perfluorooctane sulfonic acid.