Table 5

RRa of breast cancer recurrence associated with adipose concentrations of PCBb

PCB congenerN (recurrent, not recurrent)RR95% CI
BZ 74
 Lowest tertile10, 641.0Ref.
 Middle tertile8, 671.30.5–3.6
 Highest tertile12, 631.70.6–4.9
BZ 99
 Lowest tertile9, 651.0Ref.
 Middle tertile11, 641.10.4–2.7
 Highest tertile10, 651.70.6–4.4
BZ 118
 Lowest tertile6, 681.0Ref.
 Middle tertile11, 642.91.0–8.5
 Highest tertile13, 624.01.32–4.9
BZ 138
 Lowest tertile9, 651.0Ref.
 Middle tertile7, 681.10.4–3.2
 Highest tertile14, 612.30.8–6.2
BZ 146
 Lowest tertile11, 631.0Ref.
 Middle tertile9, 660.80.3–2.1
 Highest tertile10, 651.60.5–5.5
BZ 153
 Lowest tertile10, 641.0Ref.
 Middle tertile7, 680.70.2–1.9
 Highest tertile13, 622.61.0–7.1
BZ 156
 Lowest tertile11, 631.0Ref.
 Middle tertile7, 680.70.3–1.9
 Highest tertile12, 631.70.6–4.8
BZ 167
 Lowest tertile8, 671.0Ref.
 Middle tertile9, 651.30.5–3.7
 Highest tertile13, 623.11.0–9.3
BZ 170
 Lowest tertile12, 621.0Ref.
 Middle tertile8, 670.90.4–2.5
 Highest tertile10, 651.50.6–4.2
BZ 172
 Lowest tertile13, 611.0Ref.
 Middle tertile7, 680.80.3–2.2
 Highest tertile10, 651.10.5–2.9
BZ 178
 Lowest tertile12, 621.0Ref.
 Middle tertile10, 650.70.3–1.8
 Highest tertile8, 671.10.3–3.3
BZ 180
 Lowest tertile11, 631.0Ref.
 Middle tertile11, 641.10.4–2.9
 Highest tertile8, 671.30.4–3.8
BZ 183
 Lowest tertile8, 671.0Ref.
 Middle tertile10, 641.80.7–5.0
 Highest tertile12, 632.40.9–6.4
BZ 187
 Lowest tertile10, 641.0Ref.
 Middle tertile11, 640.90.4–2.4
 Highest tertile9, 662.30.7–7.1
Total PCB
 Lowest tertile9, 651.0Ref.
 Middle tertile8, 670.90.3–2.6
 Highest tertile13, 622.91.02–8.2
  • a RR, relative risk; PCB, polychlorinated biphenyl; CI, confidence interval; Ref., referent.

  • b Adjusted for age, body mass index, education, stage of disease, adjuvant tamoxifen therapy. Tests for trend were not significant.