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Table 3 Multiple regressions of the combined study group data

From: Xenoestrogenic activity in blood of European and Inuit populations

Response variable Exposure variable Homogeneity of slopes (p-value) Common slope Estimate (SE) p-value Common intercept (p-value) Adjusted R- square
XER (N = 348) CB-153 0.86 -0.01 (0.01), 0.34 0.05 0.029
  p,p'- DDE 0.24 -0.03 (0.02), 0.12 0.005 0.034
XERcomp (N = 338) CB-153 0.20 0.01 (0.02), 0.45 <0.001 0.087
  p,p'- DDE 0.15 -0.006 (0.02), 0.71 <0.001 0.086
  1. Response and exposure variables are ln-transformed in the analysis. Homogeneity of slopes: p-value for the test for homogeneity of slopes between study group and exposure variable. Common slope: the estimated common slope across study groups assuming no interaction. Common intercept: p-value for the test of a common intercept across study groups assuming a common slope. Adjusted R-square assuming a common slope.