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Table 4 Multivariate analysis using Cox proportional hazard model

From: Midterm prognosis and surgical implication for clival chordomas after extended transsphenoidal tumor removal and gamma knife radiosurgery

Variables

PE

SE

Wald chi-squared

Precision p value

Risk ratio

95% CI

Sex

2.260

0.925

5.968

0.014

9.591

1.563–58.834

GK > 15 Gy

−0.285

0.150

3.606

0.057

0.751

0.560–1.009

Brain examination

1.212

0.705

2.955

0.085

3.361

0.843–13.394

  1. GK gamma knife, PE parameter estimates, SE standard error, CI confidence interval