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Table 1 Patients’ characteristics

From: Risk factors to identify patients who may not benefit from whole brain irradiation for brain metastases - a single institution analysis

Variable Frequency Median survival Log Rank
Gender    N.S.
 Female 146 2.9 M  
 Male 193 2.1 M  
Age    p = 0.0002
 30–49 37 7.0 M  
 50–69 184 2.5 M  
 70–90 118 1.5 M  
KPS    p = 0.0001
 90–100% 94 5.2 M  
 70–80% 138 2.5 M  
 < 70% 107 1.2 M  
Time of occurrence    N.S.
 Synchronous with primary 130 2.8 M  
 After primary 209 2.4 M  
Hospitalization    p = 0.0001
 Yes 126 0.9 M  
 No 213 3.5 M  
Number of brain metastases    p = 0.031
 Singular/solitary 65 3.7 M  
  ≤ 3 75 2.6 M  
  > 3 or bulk 199 2.3 M  
Primary disease status    p = 0.0244
 Controlled primary 64 3.8 M  
 Uncontrolled primary 275 2.3 M  
Tumor site (3 most common and other)    N.S.
 NSCLC 148 2.5 M  
 SCLC 59 2.4 M  
 Breast cancer 47 2.9 M  
 Other 85   
  1. Demographic data of the 339 patients with univariate analysis of potential risk factors for median survival. N.S. no significant difference