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Table 4 Multivariate analysis for prognostic factors

From: Gamma knife radiosurgery for elderly patients with brain metastases: evaluation of scoring systems that predict survival

Prognostic factors

Multivariate analysis

HR

95% CI

Pvalue

Male

ND

0.679

≥75 yrs

ND

0.200

KPS≤80

ND

0.223

Non-lung origin

ND

0.073

Presence of extracranial metastasis

ND

0.646

Low SIR score (<4)

ND

0.282

Low GPA score (<2)

1.756

1.252-2.456

0.001