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Table 1 Patient and tumor characteristics

From: Volumetric modulated arc therapy for lung stereotactic radiation therapy can achieve high local control rates

Factors   No. Rate
Age    
  Range 56-95 years old  
  Median 73 years old  
Sex    
  Male 48 72%
  Female 19 28%
K-PS    
  90-100% 39 58%
  80-90% 20 30%
  70% 2 3%
  Unknown 6 9%
Smoking history    
  With 29 43%
  Without 17 25%
  Unknown 21 31%
T stage    
  T1a 28 42%
  T1b 14 21%
  T2 6 9%
  T3 3 4%
  Metastatic 16 24%
Pathological confirmation    
  Without 26 39%
  With 41 61%
Maximum diameter of primary tumor    
  Range 7-51 mm
  Median 20 mm
Tumor location    
  Left upper 18 27%
  Left lower 10 15%
  Right upper 17 25%
  Right middle 9 13%
  Right lower 13 19%
Combined chemotherapy    
  Both before and after SBRT 2 3%
  Before SBRT 5 7%
  After SBRT 3 4%
  None 57 85%