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Table 1 Median survival time according to potential factors and the results of univariate and multivariate analyses

From: Retrospective study of hypofractionated stereotactic radiotherapy combined with whole brain radiotherapy for patients with brain metastases

Variables N (%) MST (months) P value
Univariate Multivariate
Sex    0.146 0.004
Male 32 (64.0) 12.4   
Female 18 (36.0) 23.2   
Age    0.532 0.630
 < 60 27 (54.0) 12.9   
 ≥ 60 23 (46.0) 15.4   
KPS     < 0.001  < 0.001
 ≥ 70 41 (82.0) 16.5   
 < 70 9 (18.0) 2.8   
Primary tumor location    0.619
Lung cancer 39 (78.0) 13.6   
Others 11 (22.0) 12.4   
Extracranial metastases    0.205 0.124
Existent 31 (62.0) 12.4   
None 19 (38.0) 15.4   
Contemporaneous BM    0.615
Yes 19 (38.0) 12.9   
No 31 (62.0) 13.6   
Number of BMs    0.872
Single 19 (38.0) 12.9   
Multiple 31 (62.0) 15.4   
GTV (cm3)    0.092 0.006
 < 10.0 29 (58.0) 16.7   
 ≥ 10.0 21 (42.0) 12.9   
  1. MST, median survival time; BMs, brain metastases; GTV, gross tumor volume