Table 4 Multivariate analysis of the predictors for disease specific survival in patients diagnosed with RCC in Iceland, 1971–2005

Tumor size (cm)

1.05

1.02–1.09

0.01

Later diagnostic year (by decades)

0.90

0.85-0.95

0.01

Incidental detection

0.74

0.52–1.03

0.08

Left sided tumour

1.14

0.91-1.41

0.24

TNM group stage

1

1

-

-

2

2.34

1.36-3.99

<0.001

3

3.54

2.21-5.71

<0.001

4

13.16

8.14-21.28

<0.001

Fuhrman nuclear grade

1

1

-

-

2

0.79

0.41-1.54

0.49

3

1.10

0.56-2.13

0.78

4

1.74

0.86-3.49

0.12

Histology

Clear cell

1

-

-

Chromophobe

0.13

0.01-0.97

0.046

Papillary

0.88

0.52-1.46

0.61

Other/unknown

1.61

0.39–6.64

0.51