Table 3. Urinary Concentrations of BPA, BPF, and BPS in U.S. Children in NHANES 2013–2014^a.

			BPA, μg/L		BPF, μg/L		BPS, μg/L
variable		N	median (P25–P75)	P	median (P25–P75)	P	median (P25–P75)	P
all		868	1.25 (0.64–2.42)		0.32 (0.14–0.99)		0.29 (0.12–0.70)
age	6–11 years	409	1.34 (0.70–2.72)	0.051	0.27 (0.14–0.85)	0.009	0.27 (0.12–0.64)	0.18
	12–19 years	459	1.14 (0.60–2.30)		0.37 (0.14–1.10)		0.30 (0.13–0.77)
gender	male	429	1.22 (0.66–2.38)	0.97	0.30 (0.14–1.03)	0.83	0.28 (0.12–0.63)	0.21
	female	439	1.27 (0.64–2.49)		0.33 (0.14–0.97)		0.30 (0.13–0.78)
race/ethnicityb	non-Hispanic white	229	1.23 (0.61–2.14)	0.18	0.40 (0.14–1.23)	0.007	0.24 (0.11–0.60)	0.02
	Hispanic	286	1.13 (0.63–2.33)		0.24 (0.14–0.64)		0.39 (0.15–0.99)
	non-Hispanic black	223	1.84 (0.98–3.22)		0.36 (0.14–0.95)		0.36 (0.17–0.75)
	other	130	1.09 (0.61–2.32)		0.17 (0.14–0.93)		0.29 (0.13–0.71)
family IPRc	≤1.30	406	1.32 (0.76–2.55)	0.76	0.25 (0.14–0.79)	0.03	0.30 (0.11–0.70)	0.45
	1.31–3.50	236	1.36 (0.69–2.53)		0.34 (0.14–1.22)		0.27 (0.13–0.74)
	>3.50	154	1.09 (0.58–2.16)		0.39 (0.14–1.10)		0.27 (0.12–0.58)
	missing	72	1.00 (0.47–1.55)		0.25 (0.14–0.74)		0.45 (0.19–1.05)

^aAll variables were adjusted using population weights for the sample in which BPA concentration was measured except N (unweighted sample size). ANOVA was used to compare differences of urinary concentrations of BPA, BPF, and BPS among various categorical variables. The analysis of creatinine-adjusted concentrations of BPA, BPS, and BPF is presented in Table S4, Supporting Information.

^bRace/ethnicity was categorized based on self-reported data into Hispanic (including Mexican and non-Mexican Hispanic), non-Hispanic white, non-Hispanic black, and other race/ethnicity.³⁷

^cFamily IPRs were categorized as ≤1.30, 1.31–3.50, and >3.50.^37,50