. Author manuscript; available in PMC: 2019 Jan 17.

Published in final edited form as: J Expo Sci Environ Epidemiol. 2018 Jul 17;28(5):448–460. doi: 10.1038/s41370-018-0050-0

Table 4. Intraclass correlation coefficients for repeat urinary concentrations of phenols and phthalate metabolites (SG adjusted) before and after adjustment for potential sources of variability unrelated to exposure pathways.

Biomarker	Unadjusted ICC (95% CI)	Adjusted¹ ICC (95% CI)	Previous literature in pregnant women
Biomarker	Unadjusted ICC (95% CI)	Adjusted¹ ICC (95% CI)	ICCs adjusted for urinary concentration²
Bisphenol A	0.24 (0.10, 0.49)	0.20 (0.06, 0.47)	0.04 – 0.31 ^{4, 10-13, 26, 47, 48}
2,4-dichlorophenol	0.43 (0.24, 0.64)	0.46 (0.25, 0.68)	0.38 – 0.60 ^{10, 11}
2,5-dichlorophenol	0.34 (0.16, 0.57)	0.39 (0.20, 0.62)	0.49 – 0.61 ^{10, 11}
Butyl Paraben	0.56 (0.36, 0.74)	0.59 (0.38, 0.76)	0.38 – 0.56 ^{10, 11, 13, 49}
Methyl Paraben	0.44 (0.25, 0.65)	0.42 (0.22, 0.64)	0.24 – 0.61 ^{10, 11, 13, 49}
Propyl Paraben	0.56 (0.36, 0.74)	0.54 (0.34, 0.73)	0.32 – 0.62 ^{10, 11, 13, 49}
Monoethyl phthalate	0.68 (0.50, 0.82)	0.66 (0.46, 0.81)	0.21 – 0.50 ^{12, 24-27}
ΣDEHP metabolites	0.32 (0.15, 0.55)	0.27 (0.10, 0.57)	0.08 – 0.31 ^{12, 24-27}

Abbreviations: ΣDEHP metabolites, sum of metabolites of di(2-ethylhexyl) phthalate; ICC, intraclass correlation coefficient

Adjusted for gestational age, weight gain, time since awoke, time slept, time since last food/drink, and time since last void.

When ICCs for ΣDEHP metabolites were not available, the mean ICC for the four individual metabolites was reported