Table 3 Univariate and multivariate Cox analyses of max SUVmax versus standard prognostic factors for advanced RCC

max SUVmax (continuous variable)

<0.001

1.257 

1.177-1.342

<0.001

1.265

1.159-1.380

Karnofsky performance status (<80 %)

0.036

2.107

1.051–4.221

0.296

0.623

0.256–1.514

Lactate dehydrogenase (>1.5x upper limit of normal)

<0.001

8.655

3.559–21.049

0.001

5.026

1.935–13.052

Corrected calcium (>10 mg/dl)

0.014

2.457

1.198–5.038

0.151

1.943

0.784–4.815

Hemoglobin (<lower limit of normal)

0.121

1.810

0.854–3.833

Interval from initial diagnosis to treatment (<1 year)

0.014

1.937

1.142–3.286

0.164

1.549

0.836–2.870

Age (>65 years old)

0.416

0.803

0.474–1.361

Sex (male or female)

0.890

1.046

0.551–1.984

Pathology (clear or non–clear)

0.044

2.113

1.021–4.373

0.962

0.980

0.419–2.291