. Author manuscript; available in PMC: 2008 Feb 1.

Published in final edited form as: Cancer Causes Control. 2007 Feb;18(1):29–39. doi: 10.1007/s10552-006-0070-2

Table 2.

Serum Organochlorine Levels in African-American Breast Cancer Case Patients and Controls

Organochlorine	Cases (n=355)	Controls (n=327)	T-test p-value
**Serum levels (mean ± SD)**
PCB (μg/L)^a	2.28 ± 2.48	2.09 ± 2.16	0.27
DDE (μg/L)	9.90 ± 12.84	8.13 ± 7.78	0.029
**Lipid-adjusted levels (mean ± SD)**^b
PCB (μg/g)^a	0.31 ± 0.31	0.31 ± 0.34	0.84
DDE (μg/g)	1.40 ± 1.54	1.25 ± 1.26	0.14

One case and one control did not have data on PCB levels

Lipid adjustment done as described by Phillips et al.,1989.