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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