Table 3 Univariate and multivariate Cox regression survival analysis for the prediction of OS

Gender

198

Male

154

Reference

Female

44

1.161 (0.687–1.962)

0.577

Age

198

1.004 (0.986–1.022)

0.687

Hemoglobin

198

0.987 (0.978–0.995)

0.002

0.991 (0.981–1.001)

0.065

Postoperative medication

198

Absent

35

Reference

TK1

25

0.747 (0.365–1.530)

0.425

PD1

138

0.680 (0.396–1.167)

0.162

Tumor site

198

Left

120

Reference

Right

78

0.951 (0.607–1.490)

0.828

Number of metastatic sites

198

 < 2

151

Reference

 ≥ 2

47

1.123 (0.683–1.848)

0.648

Histology

198

Clear cell

176

Reference

Non–clear cell

22

2.235 (1.216–4.108)

0.010

1.820 (0.964–3.436)

0.065

Microvascular invasion

198

Present

47

Reference

Absent

151

0.823 (0.491–1.379)

0.459

Tumor size (cm)

198

 > 7

116

Reference

 ≤ 7

82

1.379 (0.891–2.133)

0.149

Nephrectomy

198

Minimally invasive

176

Reference

Open

22

0.321 (0.117–0.879)

0.027

0.397 (0.140–1.126)

0.082

Fuhrman grade

198

G1 + G2

108

Reference

G3 + G4

90

1.407 (0.909–2.178)

0.126

T stage

198

T1 + T2

54

Reference

T3 + T4

144

1.917 (1.094–3.358)

0.023

1.263 (0.702–2.271)

0.436

N stage

198

N0

147

Reference

N1

51

1.021 (0.610–1.708)

0.937

Tumor necrosis

198

Present

98

Reference

Absent

100

0.542 (0.348–0.844)

0.007

0.524 (0.328–0.838)

0.007

LMR

198

0.736 (0.625–0.867)

 < 0.001

0.783 (0.650–0.943)

0.010

NLR

198

1.127 (1.049–1.211)

0.001

0.948 (0.823–1.091)

0.457

ALR

198

1.007 (1.005–1.010)

 < 0.001

1.005 (1.001–1.008)

0.006