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Table 1 Patient characteristics of both treatment groups

From: Radiosurgery alone versus radiosurgery plus whole-brain irradiation for very few cerebral metastases from lung cancer

  Radiosurgery alone N patients (%) Radiosurgery + WBRT N patients (%) P-value
Radiosurgery dose    
 <20 Gy (n = 63) 38 (39) 25 (50)  
 ≥20 Gy (n = 85) 60 (61) 25 (50) 0.46
Age    
 ≤59 years (n = 76) 49 (50) 27 (54)  
 ≥60 years (n = 72) 49 (50) 23 (46) 0.86
Gender    
 Female (n = 68) 47 (48) 21 (42)  
 Male (n = 80) 51 (52) 29 (58) 0.73
ECOG Performance Score    
 0-1 (n = 93) 64 (65) 29 (58)  
 2 (n = 55) 34 (35) 21 (42) 0.68
Histology    
 Adenocarcinoma (n = 92) 62 (63) 30 (60)  
 Others (n = 56) 36 (37) 20 (40) 0.89
Number of cerebral metastases    
 1 (n = 90) 61 (62) 29 (58)  
 2-3 (n = 58) 37 (38) 21 (42) 0.84
Maximum diameter of all cerebral metastases    
 ≤18 mm (n = 75) 50 (51) 25 (50)  
 ≥19 mm (n = 73) 48 (49) 25 (50) 0.97
Main site of cerebral metastases    
 Supratentorial (n = 127) 84 (86) 43 (86)  
 Infratentorial (n = 21) 14 (14) 7 (14) 0.99
Extra-cerebral metastases    
 No (n = 95) 64 (65) 31 (62)  
 Yes (n = 53) 34 (35) 19 (38) 0.89
Interval from lung cancer diagnosis to irradiation    
 ≤11 months (n = 77) 51 (52) 26 (52)  
 ≥12 months (n = 71) 47 (48) 24 (48) 0.99