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Table 2 Prognostic factors for overall survival by univariate and multivariate Cox regression analysis

From: Docetaxel with or without estramustine for estramustine refractory castration-resistant prostate cancer: a single institution experience

   

Univariate

  

Multivariate

  

parameter

category

n

Hazard ratio

95%CI

p value

Hazard ratio

95%CI

p value

Treatment

D

28

1.000

  

0.853

    
 

DE

33

0.934

0.454

1.923

     

Age (years)

≦70

30

1.000

  

0.549

    
 

> 70

31

0.808

0.401

1.628

     

Gleason Score

≦7

17

1.000

  

0.259

    
 

> 8

39

1.558

0.718

3.381

     

PSA at PCa diagnosis (ng/ml)

≦113

31

1.000

  

0.940

    
 

> 113

30

1.027

0.520

2.025

     

PSA at baseline (ng/ml)

≦12.8

31

1.000

  

< 0.001

1.000

  

0.017

 

> 12.8

30

4.903

2.181

11.024

 

3.605

1.262

10.296

 

ECOG performance status

≦1

53

1.000

  

< 0.001

1.000

  

0.218

 

2

8

5.567

2.366

13.098

 

1.803

0.706

4.605

 

Time from diagnosis to this chemothrapy (months)

≦35

31

1.000

  

0.003

1.000

  

0.015

 

> 35

30

0.351

0.172

0.715

 

0.286

0.104

0.782

 

Bone metastasis

no

28

1.000

  

0.014

1.000

  

0.419

 

yes

33

2.383

1.165

4.873

 

0.646

0.224

1.862

 

No. of Docetaxel cycles

< 5

28

1.000

  

< 0.001

1.000

  

< 0.001

 

<5

33

0.213

0.100

0.452

 

0.209

0.093

0.472

 

Hemoglobin (g/dl)

≦12.0

33

1.000

  

0.120

    
 

> 12.0

28

0.580

0.289

1.163

     
  1. CI, confidence interval; D, Docetaxel without estramustine; DE, Docetaxel with estramustine; PSA, prostate-specific antigen; PCa, Prostate Cancer; ECOG, Eastern Cooperative Oncology Group; CRPC, Castration Resistant Prostate Cancer