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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