Table 8 Breast cancer odds ratios (matched analysis) in selected major sectors on tumor estrogen receptor status, and with interaction on prior farm work

538

157

188

Model 1 – Cumulative exposure, ¹ no interactions

OR (95% CI) Wald P (two-tailed)

1.32 (0.94-1.85) 0.12

1.35 (0.73-2.49)

1.71 (1.12-2.62) 0.014

2.03 (1.11-3.71) 0.022

1.73 (0.77-3.89)

1.02 (0.36-2.89)

3.87 (1.39-10.8) 0.010

3.24 (0.44-24.1)

0.15 (0.00-4.27)

3.63 (1.90-6.94) 9×10^-5

1.17 (0.28-4.97)

1.76 (0.78-3.94)

1.50 (0.55-4.10)

4.01 (1.37-11.8) 0.011

3.19 (1.16-8.75) 0.024

Model 2 – Cumulative exposure with prior farm interaction terms (IpAg)

OR (95% CI) Wald P (two-tailed)

1.32 (0.93-1.87)

1.34 (0.70-2.57)

1.76 (1.13-2.74) 0.012

2.21 (1.14-4.30) 0.019

1.51 (0.65-3.50)

1.17 (0.43-3.13)

0.84 (0.53-1.32)

1.26 (0.95-1.67) 0.11

0.47 (0.12-1.93)

2.87 (0.93-8.84) 0.066

2.78 (0.35-22.1)

0.20 (0.01-5.45)

3.03 (0.74-12.4) 0.12

3.46 (0.27-45.0)

0.00 (0.00->100)

3.13 (1.62-6.05) 7×10^-4

1.26 (0.30-5.32)

0.96 (0.31-2.99)

2.10 (0.52-8.43)

0.65 (0.03-15.3)

3.03 (0.80-11.6) 0.10

1.52 (0.51-4.51)

1.21 (0.26-5.60)

4.85 (1.25-18.8) 0.022

0.91 (0.51-1.65)

1.81 (1.08-3.04) 0.025

0.62 (0.22-1.72)