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Table 1 Patient characteristics

From: Clinical Analysis of stereotactic body radiation therapy using extracranial gamma knife for patients with mainly bulky inoperable early stage non-small cell lung carcinoma

Characteristic Patients, No.
Gender Male 32
  Female 11
Age Median(range),y 69(46~81)
  ≤70 23
  >70 20
Karnofsky performance status 70 7
  80 19
  90 17
Comorbidities Yes 33
  No 10
Type Central 8
  Periphery 35
Histology Squamous cell carcinoma 17
  Adenocarcinoma 14
  Adenosquamouscarcinoma 1
  unspecified 11
Clinical stage i 23
  ii 20
Tumor size ≤3 cm 4
  3-5 cm 20
  5-7 cm 10
  >7 cm 9
Dose/fraction
(50% isodose line)
<6Gy 27
  ≥6Gy 16