Table 3.

Trends in SG-corrected urinary concentrations [ng/mL] in 760 urine samples collected during 2007–2014.

		BPA		MEPB		ETPB		PRPB
Characteristics	n	tau a	p-value b	tau	p-value	tau	p-value	tau	p-value
Race/ethnicity
White (non-Hispanic)	425	−0.07	0.03	−0.19	<0.01	−0.14	<0.01	−0.15	<0.01
Hispanic	173	−0.18	<0.01	0.02	0.74	0.06	0.24	−0.06	0.23
Other c	162	−0.14	0.01	−0.15	0.01	0.00	0.95	−0.15	0.01
Pre-pregnancy BMI
Normal/ underweight	335	−0.08	0.04	−0.15	<0.01	−0.07	0.05	−0.19	<0.01
Overweight	241	−0.20	<0.01	−0.07	0.09	0.03	0.50	−0.02	0.62
Obese	172	−0.02	0.68	−0.20	<0.01	−0.15	<0.01	−0.15	<0.01
Education
Less than college degree	361	−0.14	<0.01	−0.08	0.02	0.01	0.77	−0.08	0.02
Bachelor’s degree	278	−0.11	0.01	−0.19	<0.01	−0.12	<0.01	−0.16	<0.01
Graduate or professional degree	121	−0.10	0.12	−0.20	<0.01	−0.16	0.01	−0.18	<0.01
Age at delivery
≤ 35 years old	404	−0.13	<0.01	−0.15	<0.01	−0.08	0.02	−0.14	<0.01
> 35 years old	356	−0.09	0.02	−0.12	<0.01	−0.02	0.56	−0.11	<0.01
Homeownership
Yes	280	−0.12	<0.01	−0.12	<0.01	−0.10	0.02	−0.09	0.03
No	466	−0.12	<0.01	−0.13	<0.01	−0.02	0.56	−0.15	<0.01
Parity
1	49	−0.26	0.01	−0.12	0.24	−0.02	0.84	−0.22	0.02
>1	697	−0.10	<0.01	−0.14	<0.01	−0.06	0.01	−0.13	<0.01

^aThe number of missing values for pre-pregnancy BMI, homeownership, and parity are 12, 14, and 14, respectively.

^bKendall’s tau from the Mann-Kendall trend test: negative and positive tau represent decrease and increase in urinary concentrations, respectively, over time.

^cP-values from the Mann-Kendall trend test less than 0.05 are highlighted in bold.

^dIncludes Black (3%), Asian (18%), and multiracial (3%).