Table 3

Mean and median DDE and PCB concentrations according to cohort participation

1974Pa1989Pa
Mean (SD)MedianMean (SD)Median
CasesControlsCasesControlsCasesControlsCasesControls
Total DDE
 Unadjusted (ng/ml)11.5 (7.1)13.6 (10.6)9.811.10.067.9 (6.4)9.7 (3.6)6.47.00.41
 Lipid-adjusted ng/gm1698.9 (929.3)1920.3 (1409.0)1463.91668.40.201311.9 (1036.5)1586.3 (1557.4)1119.21181.70.56
Total PCBs
 Unadjusted (ng/ml)4.9 (3.8)4.7 (2.3)3.94.20.212.1 (2.0)2.2 (1.9)1.61.70.37
 Lipid-adjusted (ng/gm)735.3 (644.8)663.6 (322.5)595.4607.30.48327.7 (306.3)332.9 (279.6)252.0270.30.58
  • a Wilcoxon signed rank test.