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Table 1 Baseline patient characteristics

From: Outcomes after stereotactic body radiotherapy for lung tumors, with emphasis on comparison of primary lung cancer and metastatic lung tumors

  Primary lung cancer Metastatic lung tumor Total
Number 164 patients 37 patients 201 patients
Median age (y) 78 (range: 40–92) 63 (range: 25–85) 76 (range: 25–92)
Gender    
  Female 39 (23%) 13 (35%) 52 (25%)
  Male 125 (76%) 24 (64%) 149 (74%)
ECOG performance status    
  0-1 142 (86%) 37 (100%) 179 (89%)
  2-3 22 (13%) 0 (0%) 22 (10%)
History of other malignancies    
  Yes 81 (49%) 6 (16%) 87 (43%)
  No 83 (50%) 31 (83%) 114 (56%)
Pack-year smoking    Median 37.5 (range: 0–180)
Never 35 (21%) 10 (43%) 45 (24%)
  < 37.5 35 (21%) 10 (43%) 45 (24%)
  ≥ 37.5 88 (55%) 5 (20%) 93 (50%)
FEV1, % of predicted    Median 92.5 (range: 25.1-203.6)
  < 92 54 (47%) 4 (66%) 58 (48%)
  ≥ 92 60 (52%) 2 (33%) 62 (51%)
Home oxygen therapy 13 0 13 (6%)
Operability    
  Operable 64 (39%) 20 (54%) 84 (41%)
  Inoperable 100 (60%) 17 (45%) 117 (58%)
  1. Abbreviations: ECOG Eastern cooperative oncology group, FEV1 forced expiratory volume in 1 second.