Table 3.
Crude and adjusted estimated effects (RR, 95% CI) of prenatal PCB, DDE, and DDT concentrations on overweight at 6.5 years in the analysis population (n = 344).
| OC concentrations (ng/mL) | n | Crude model | Multivariable-adjusted modela | Multipollutant-adjusted modela,b | ||||
|---|---|---|---|---|---|---|---|---|
| PCBs | ||||||||
| < 0.6 (T1) | 110 | Reference | Reference | Reference | ||||
| 0.6–0.9 (T2) | 117 | 0.82 (0.51, 1.32) | 0.97 (0.58, 1.62) | 0.92 (0.54, 1.56) | ||||
| > 0.9 (T3) | 117 | 1.30 (0.86, 1.96) | 1.70 (1.09, 2.64) | 1.54 (0.95, 2.49) | ||||
| DDE | ||||||||
| < 0.7 (T1) | 113 | Reference | Reference | Reference | ||||
| 0.7–1.5 (T2) | 116 | 1.52 (0.97, 2.40) | 1.67 (1.10, 2.55) | 1.45 (0.93, 2.24) | ||||
| > 1.5 (T3) | 115 | 1.41 (0.88, 2.25) | 1.28 (0.81, 2.03) | 0.94 (0.58, 1.54) | ||||
| DDT | ||||||||
| < 0.06 (T1) | 108 | Reference | Reference | Reference | ||||
| 0.06–0.18 (T2) | 124 | 1.32 (0.84, 2.10) | 1.19 (0.76, 1.87) | 1.12 (0.73, 1.71) | ||||
| > 0.18 (T3) | 112 | 1.42 (0.90, 2.26) | 1.17 (0.73, 1.88) | 1.11 (0.68, 1.81) | ||||
| aAdjusted for birth weight, previous parity, maternal prepregnancy BMI, maternal education and social class at pregnancy, maternal smoking in pregnancy, maternal age at delivery, and breast-feeding. bAdditionally adjusted for HCB and the other OCs shown in this table [all OCs in tertiles (T)]. | ||||||||