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Table 3 Intraclass correlation coefficients (ICCs)a of urinary organophosphate ester metabolite concentrations measured up to three times during pregnancy

From: Predictors and reproducibility of urinary organophosphate ester metabolite concentrations during pregnancy and associations with birth outcomes in an urban population

Analyte (n = 76)

Uncorrected

Correctedb

BDCIPP

0.68 (0.53, 0.80)

0.59 (0.45, 0.73)

DPHP

0.33 (0.21, 0.49)

0.27 (0.15, 0.43)

ip-PPP

0.23 (0.12, 0.41)

0.09 (0.01, 0.44)

tb-PPP

0.20 (0.09, 0.39)

0.19 (0.08, 0.38)

BCIPPc

0.18 (0.07, 0.41)

 
  1. a ICCs estimated using linear mixed effects regression with random intercepts for individual, identity covariance, Huber-White robust sandwich standard errors, and restricted maximum likelihood
  2. b Corrected for specific gravity of urine sample
  3. c Dichotomized as < LOD vs. ≥ LOD
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Environmental Health

ISSN: 1476-069X