Table 2

Cox regression analysis for various potential prognostic factors in survival

Overall survival (103 patients)

Disease-free survival (68 patients) in M0 at Nephrectomy

Variable

Unfavorable/favorable characteristics

No. of Patients

Analysis

Relative risk

95% confidential interval

P value

No. of Patients

Analysis

Relative risk

95% confidential interval

P value

Univariate (U)

11.927

4.084 – 34.864

< 0.0001

U

6.357

2.109 – 19.163

0.001

Grade

01/02/2003

32/57/14

17/39/12

Multivariate (M)

8.658

1.647 – 45.529

0.0108

M

1.006

0.175 – 5.776

0.9942

U

8.305

3.430 – 32.714

< 0.0001

U

4.691

2.501 – 13.822

0.002

pT

> 3/2 <

31/72

13/55

M

2.171

1.626 – 7.189

0.0225

M

2.447

1.004 – 5.965

0.0489

U

9.486

3.479 – 25.864

< 0.0001

Cell type

sarcomatoid/

12/91

0/68

acinar

M

2.773

1.302 – 9.587

0.017

U

11.798

3.922 – 35.492

< 0.0001

Metastasis

(+)/(-)

35/68

0/68

M

4.362

1.973 – 19.567

0.026

U

4.267

1.515 – 12.021

0.006

U

2.028

0.592 – 6.952

0.2605

IFNAR1

high/low

47/56

25/43

M

1.958

0.661 – 5.804

0.2252

M

3.244

0.788 – 13.356

0.1031

U

10.695

4.345 – 26.323

< 0.0001

U

11.03

2.920 – 41.655

0.0004

IFNAR2

high/low

35/68

18/50

M

3.813

1.295 – 11.226

0.0151

M

7.604

1.559 – 37.101

0.0121

Kamai et al. BMC Cancer 2007 7:159   doi:10.1186/1471-2407-7-159