Table 4. Correlations between single and five-sample average measurements of ∑DEHP and MnBP.

		Correlation with five-sample average
		∑DEHP	MnBP
First-visit (n = 547)	Coefficient	0.73	0.74
	P-Value	<.0001	<.0001
Second-visit (n = 407)	Coefficient	0.72	0.66
	P-Value	<.0001	<.0001
Third-visit (n = 355)	Coefficient	0.79	0.63
	P-Value	<.0001	<.0001
Fourth-visit (n = 279)	Coefficient	0.68	0.56
	P-Value	<.0001	<.0001
Fifth-visit (n = 61)	Coefficient	0.45	0.72
	P-Value	0.0003	<.0001
Total (n = 1649)	Coefficient	0.72	0.67
	P-Value	<.0001	<.0001

∑DEHP, molar sum of mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) and mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP); MnBP, mono-n-butyl phthalate.