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. 2014 Oct 28;112(1):103–111. doi: 10.1038/bjc.2014.556

Table 4. Multivariate survival analyses for HER2-positive primary breast cancer patients treated with adjuvant trastuzumab in the second set.

      Multivariate analysis
Model Variable Category HR 95% CI P-value
Disease-free survival
1 EGFR overexpression (3+) Positive vs negative 2.837 1.172–6.863 0.021
  pT stage T2–T3 vs T1 2.000 0.928–4.310 0.077
  pN stage N1–N3 vs N0 1.608 0.637–4.063 0.315
  Lymphovascular invasion Positive vs negative 2.368 1.113–5.038 0.025
2 EGFR overexpression (2+ or more) Positive vs negative 3.177 1.587–6.359 0.001
  pT stage T2–T3 vs T1 2.106 0.980–4.522 0.056
  pN stage N1–N3 vs N0 1.673 0.667–4.196 0.273
  Lymphovascular invasion Positive vs negative 2.487 1.175–5.264 0.017
Overall survival
1 EGFR overexpression (3+) Positive vs negative 4.697 1.958–11.266 0.001
  pT stage T2–T3 vs T1 2.640 0.987–7.061 0.053
  Lymphovascular invasion Positive vs negative 2.870 1.190–6.924 0.019
2 EGFR overexpression (2+ or more) Positive vs negative 4.582 2.075–10.119 <0.001
  pT stage T2–T3 vs T1 2.808 1.051–7.498 0.039
  Lymphovascular invasion Positive vs negative 3.143 1.303–7.582 0.011

Abbreviations: CI=confidence interval; EGFR=epidermal growth factor receptor; HR=hazard ratio.