Table 3 Cox proportional hazards model

From: Circulating tumour cells are associated with increased risk of venous thromboembolism in metastatic breast cancer patients

  Hazard ratio Lower 95% CI Upper 95% CI P -value
Baseline CTC (1 vs 0) 5.29 1.58 17.70 0.007
Line of therapy (2 vs 1) 2.53 1.00 6.40 0.049
Number of metastatic sites (2 or 3 vs 1) 2.81 0.78 10.10 0.110
Number of metastatic sites (4 or 5 vs 1) 8.08 2.24 29.10 0.001
  1. Abbreviations: CI= confidence interval; CTC=circulating tumour cells.