Table 1—

Adjusted* geometric means and SEs of HOMA-IR by quartiles of PCDDs, PCDFs, dioxin-like PCBs, nondioxin-like PCBs, and OC pesticides

AnalyteGeometric means ± SEs of HOMA-IR
Ptrend
<25th†25th–<50th50th–<75th≥75th
PCDDs
    Model 13.30 ± 0.433.48 ± 0.433.49 ± 0.423.68 ± 0.500.05
    Model 23.39 ± 0.363.50 ± 0.353.47 ± 0.343.59 ± 0.400.25
PCDFs
    Model 13.45 ± 0.433.39 ± 0.433.51 ± 0.423.59 ± 0.460.46
    Model 23.44 ± 0.353.48 ± 0.343.44 ± 0.343.58 ± 0.370.37
Dioxin-like PCBs
    Model 13.45 ± 0.483.44 ± 0.433.46 ± 0.423.59 ± 0.520.52
    Model 23.50 ± 0.403.48 ± 0.353.42 ± 0.343.54 ± 0.420.93
Nondioxin-like PCBs
    Model 13.65 ± 0.523.40 ± 0.433.54 ± 0.443.36 ± 0.480.21
    Model 23.49 ± 0.413.38 ± 0.353.50 ± 0.363.57 ± 0.420.42
OC pesticides
    Model 13.13 ± 0.453.30 ± 0.403.56 ± 0.434.02 ± 0.58<0.01
    Model 23.27 ± 0.393.36 ± 0.333.48 ± 0.353.85 ± 0.45<0.01
  • *

    * Model 1: Adjusted for age, sex, race, and poverty income ratio. Model 2: Additional adjustment for BMI, waist circumference, cigarette smoking, serum cotinine concentration, alcohol consumption, and exercise.

  • Detectable values of each POP were individually ranked, and the rank orders of the individual POPs in each subclass were summed to arrive at the subclass value. All not detectable values were ranked as zero. The summary values were categorized by cutoff points of 25th, 50th, and 75th values of the sum of ranks.