Table 2 Univariate and multivariate analyses in children with MRTK

HR

95% CI

P

HR

95% CI

P

Sex

0.89

0.43–1.84

0.753

Age

0.35

0.17–0.74

0.005

0.274

0.122–0.617

0.0043

Preoperative metastasis

3.47

1.55–7.75

0.002

4.23

1.649–10.85

0.0012

Fever

1.04

0.48–2.27

0.918

Anemia

2.47

1.2–5.11

0.012

Hematuresis

0.67

0.31–1.41

0.288

Hypertension

8.45

1.94–36.82

0.0013

Hypercalcemia

4.15

1.35–12.79

0.01

Preoperative chemotherapy

1.32

0.59–2.96

0.497

Tumor size

1.01

0.92–1.11

0.809

Operation time

1

0.99–1.01

0.818

Hemorrhage

1

1–1

0.25

Tumor site

1.99

0.97–4.09

0.06

Tumor location

0.62

0.39–0.98

0.042

Cross the center line

0.58

0.28–1.18

0.131

Tumor rupture

0.94

0.45–1.95

0.866

Capsule

1.91

0.91–3.99

0.087

Incomplete tumor resection

5.73

2.2-14.92

0.00011

Tumor embolus

2.21

0.86–5.68

0.099

Infiltration

1.61

0.74–3.52

0.232

Lymph node metastasis

3.18

1.19–8.45

0.017

Tumor stage

1.77

1.12–2.8

0.047

Postoperative complication

13.09

3.07–55.78

<0.0001

Postoperative chemotherapy

3.86

1.72–8.67

0.001

3.155

1.216–8.185

<0.0001

Chemotherapy protocol

0.57

0.35–0.91

0.019