Table 2

Geometric mean (and geometric SD) serum levels of organochlorine compounds unadjusted and adjusteda for lipid levels among breast cancer cases and controls, Long Island Breast Cancer Study Project, 1996–1997

Organochlorine compoundStudy population size (n)Unadjusted (ng/ml)Adjusted* (ng/g)
CasesControlsCasesControlst test PCasesControlst test P
DDE6434274.31 (2.84)4.07 (2.68)0.36671.96 (2.76)645.74 (2.59)0.52
DDT6334180.44 (1.84)0.43 (1.82)0.5468.98 (1.83)69.32 (1.79)0.89
Peak-4 PCBs6384232.49 (1.72)2.45 (1.76)0.68386.72 (1.69)391.74 (1.74)0.70
BZ1186384230.35 (2.05)0.36 (2.08)0.9855.13 (2.00)56.47 (2.03)0.59
BZ1386384230.53 (2.56)0.53 (2.53)0.9482.08 (2.54)84.92 (2.52)0.56
BZ1536384230.98 (1.69)0.96 (1.72)0.61151.68 (1.66)153.20 (1.70)0.76
BZ1806384230.51 (1.79)0.49 (1.83)0.2579.66 (1.75)78.63 (1.79)0.70
Chlordane5973970.61 (2.39)0.60 (2.07)0.6294.58 (2.28)95.90 (1.95)0.77
Dieldrin1811480.12 (2.41)0.12 (2.18)0.8320.40 (2.34)21.29 (2.16)0.64
  • a Adjusted using method 2 as described by Phillips et al. (50) .