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Table 5 Final model of multivariate Cox regression analysis for prediction of breast cancer-related death.

From: Circulating tumor cells, disease recurrence and survival in newly diagnosed breast cancer

Parameter HR 95% CI P
CTC 0 vs 1 3.47 1.36-8.83 0.009
PR neg vs pos 3.11 1.28-7.56 0.012
N stage    
0 1.00   0.001
1 6.83 2.529-18.463 <0.001
2+3 3.19 0.908-11.229 0.070
  1. CI, confidence interval; CTC, circulating tumor cells; HR, hazard ratio; PR, progesterone receptor.