Mixture effects of prenatal exposure to per- and polyfluoroalkyl substances and polybrominated diphenyl ethers on maternal and newborn telomere length

Table 1 Description of Chemicals in Our Bodies analytic sample analyzing per- and poly-fluoroalkyl substances, and polybrominated diphenyl ethers and maternal and newborn telomere length

	Newborn Subsample (N = 292)	Maternal Subsample (N = 110)	Matched Maternal–Fetal Unit Pairs Subsample (N = 76)
	N (%) or Mean (SD)	N (%) or Mean (SD)	N (%) or Mean (SD)
Maternal Age at Enrollment, years
Mean (SD)	34 (5.0)	33 (5.4)	34 (5.1)
Gestational age at delivery
Mean (SD)	39 (1.7)	39 (1.5)	39 (1.7)
Pre-pregnancy BMI (kg/m²)
Mean (SD)	25 (5.1)	26 (5.6)	25 (5.2)
Maternal Education
Less than High School	25 (9%)	14 (13%)	4 (5%)
High School Degree or Some College	59 (20%)	24 (22%)	11 (14%)
College Degree	81 (28%)	34 (31%)	28 (37%)
Graduate Degree	127 (43%)	38 (35%)	33 (43%)
Maternal Race/Ethnicity
Non-Hispanic White	126 (43%)	46 (42%)	40 (53%)
Non-Hispanic Black	10 (3%)	4 (4%)	2 (3%)
Asian/Pacific Islander	62 (21%)	16 (15%)	14 (18%)
Latina	85 (29%)	39 (35%)	17 (22%)
Other	9 (3%)	5 (5%)	3 (4%)
Parity
No Prior Births	162 (55%)	52 (47%)	40 (53%)
One or More Prior Births	130 (45%)	58 (53%)	36 (47%)

Abbreviations: SD Standard deviation
Note: There are 326 pregnant participants, of which there are 76 matched maternal–fetal unit pairs

ISSN: 1476-069X