Table 2 Survival analysis (Log-rank test and Cox regression model) evaluating the influence of characteristics for osteosarcoma patient survival.

From: Predictive model for the 5-year survival status of osteosarcoma patients based on the SEER database and XGBoost algorithm

Characteristic

\({\chi}^{2}\)

P-value

Sex

3.541

0.060

Anatomical location

65.177

 < 0.001

Histological grade

13.155

0.001

Primary tumor number

0.455

0.500

Local lymphatic metastasis

60.638

 < 0.001

Distant metastasis

223.389

 < 0.001

Extension

248.116

 < 0.001

Radiation

67.922

 < 0.001

Chemotherapy

1.093

0.296

Surgery

141.786

 < 0.001

 

Hazard ratio (95%)

 

Age at diagnosis

1.682 (1.538, 1.840)

 < 0.001

Year of diagnosis

1.010 (0.895, 1.141)

0.867

Tumor size

1.266 (1.185, 1.353)

 < 0.001

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