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Table 3 Final model of multivariate Cox regression analysis for prediction of recurrence-free survival among univariately significant parameters.

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

Parameter HR 95% CI P
CTC 0 vs 1 1.63 0.83-3.19 0.155
Differentiation grade    
I 1.00   0.003
II 2.56 0.84-7.78 0.097
III 5.49 1.82-16.54 0.003
T stage    
1 1.00   0.038
2 1.88 1.00-3.55 0.050
3+4 3.38 1.14-10.00 0.028
  1. CI, confidence interval; CTC, circulating tumor cells; HR, hazard ratio.