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. 2014 Jun 30;48(15):8881–8890. doi: 10.1021/es501744v

Table 1. Intraclass Correlation Coefficient of HOME Study Children’s Urinary Phthalate Metabolite Concentrations Collected (A) Annually from 1–5 Years of Age and (B) Twice ∼2 Weeks Apart at 1–3 Years of Agea.

  A: annual ICCs B: short-term ICCs
metabolite allb 1 year 2 years 3 yrs allb
unadjusted N = 283 subjects; 1,070 samplesc N = 16 subjects N = 25 subjects N = 27 subjects N = 61 subjects; 136 samplesd
∑DEHPe 0.18 (0.10, 0.27) 0.35 (0.00, 0.61) 0.27 (0.00, 0.67) 0.44 (0.00, 0.73) 0.29 (0.05, 0.49)
MBzP 0.26 (0.17, 0.35) 0.51 (0.30, 0.63) 0.14 (0.00, 0.42) 0.56 (0.29, 0.74) 0.34 (0.09, 0.54)
MCPP 0.20 (0.12, 0.29) 0.57 (0.18, 0.85) 0.29 (0.00, 0.67) 0.45 (0.00, 0.75) 0.31 (0.09, 0.49)
MCOP 0.17 (0.09, 0.26) 0.54 (0.13, 0.85) 0.00 (0.00, 0.37) 0.16 (0.00, 0.50) 0.15 (0.00, 0.33)
MCNP 0.21 (0.13, 0.29) 0.71 (0.37, 0.86) 0.20 (0.00, 0.59) 0.25 (0.00, 0.70) 0.25 (0.09, 0.41)
MEP 0.36 (0.26, 0.45) 0.30 (0.08, 0.52) 0.39 (0.15, 0.61) 0.53 (0.13, 0.79) 0.32 (0.08, 0.53)
MnBPf 0.22 (0.02, 0.43) N/Af N/Af N/Af N/Af
MiBPf 0.30 (0.10, 0.49) N/Af N/Af N/Af N/Af
Creatinine Adjusted          
∑DEHPe 0.11 (0.03, 0.19) 0.41 (0.00, 0.85) 0.24 (0.00, 0.56) 0.52 (0.16, 0.81) 0.20 (0.00, 0.41)
MBzP 0.25 (0.18, 0.35) 0.26 (0.08, 0.42) 0.25 (0.03, 0.56) 0.61 (0.35, 0.75) 0.39 (0.19, 0.57)
MCPP 0.19 (0.11, 0.27) 0.60 (0.19, 0.91) 0.60 (0.21, 0.83) 0.34 (0.00, 0.63) 0.25 (0.07, 0.43)
MCOP 0.15 (0.06, 0.24) 0.50 (0.00, 0.86) 0.00 (0.00, 0.26) 0.22 (0.00, 0.59) 0.03 (0.00, 0.20)
MCNP 0.19 (0.09, 0.27) 0.72 (0.45, 0.91) 0.28 (0.00, 0.69) 0.17 (0.00, 0.79 0.19 (0.00, 0.38)
MEP 0.35 (0.22, 0.44) 0.46 (0.29, 0.61) 0.28 (0.00, 0.72) 0.66 (0.38, 0.85) 0.29 (0.00, 0.52)
MnBPf 0.20 (0.01, 0.39) N/Af N/Af N/Af N/Af
MiBPf 0.31 (0.06, 0.50) N/Af N/Af N/Af N/Af
Creatinine z-Score Adjusted          
∑DEHPe 0.09 (0.02, 0.16) 0.46 (0.07, 0.75) 0.28 (0.00, 0.53) 0.48 (0.26, 0.67) 0.20 (0.00, 0.40)
MBzP 0.25 (0.16, 0.34) 0.39 (0.22, 0.53) 0.42 (0.20, 0.68) 0.59 (0.35, 0.79) 0.36 (0.16, 0.55)
MCPP 0.19 (0.11, 0.26) 0.64 (0.43, 0.86) 0.59 (0.32, 0.78) 0.33 (0.07, 0.53) 0.25 (0.08, 0.43)
MCOP 0.13 (0.03, 0.22) 0.47 (0.22, 0.63) 0.00 (0.00, 0.11) 0.22 (0.00, 0.40) 0.03 (0.00, 0.20)
MCNP 0.20 (0.09, 0.28) 0.61 (0.51, 0.68) 0.24 (0.00, 0.53) 0.18 (0.00, 0.66) 0.19 (0.00, 0.38)
MEP 0.39 (0.26, 0.48) 0.50 (0.36, 0.67) 0.33 (0.02, 0.69) 0.76 (0.30, 0.88) 0.33 (0.04, 0.56)
MnBPf 0.16 (0.00, 0.38) N/Af N/Af N/Af N/Af
MiBPf 0.31 (0.07, 0.50) N/Af N/Af N/Af N/Af
creatinine 0.18 (0.08, 0.28) 0.45 (0.21, 0.65) 0.03 (0.00, 0.40) 0.30 (0.00, 0.54) 0.17 (0.00, 0.34)
a

ICC = intraclass correlation coefficient; N/A = not available.

b

Models adjusted for visit number.

c

All participants with at least 2 phthalate measurements, but not necessarily complete covariate information.

d

Some participants provided 2 urine samples in multiple years but are counted only once in the final column.

e

∑DEHP= Sum of MEHP, MEHHP, MEOHP, and MECPP.

f

MnBP and MiBP measured only at 4 and 5 years of age.