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Table 4 Results of the univariate analysis

From: Risk factors of distant brain failure for patients with newly diagnosed brain metastases treated with stereotactic radiotherapy alone

Parameter Number of patients MDBFT (months) 95% confidence interval p value
No. of metastases     0.003
1 86 (65.2%) 54 --  
> 1 46 (34.8%) 8 2.0-14.1  
Total target volume (cc)     0.021
> 6 50 (37.9%) 10 4.7-15.3  
≤ 6 82 (62.1%) 21 11.8-30.2  
Extracranial disease     0.003
progressive 91 (68.9%) 11 6.3-15.7  
absent or controlled 41 (31.1%) Not reach --  
IT(months)     0.011
≥ 60 20 (15.2%) Not reach --  
< 60 112 (84.8%) 12 7.6-16.5  
KPS score     0.012
KPS = 70 45 (34.1%) 10 3.3-16.7  
KPS ≠ 70 87 (65.9%) 21 9.5-32.5  
Histologic characteristics     0.762
Melanoma 5 (3.8%) 18 0-41.4  
Others 127 (96.2) 15 7.7-23.3  
Risk factor scores     < 0.001
0-1 27 (20.5%) Not reach --  
2-3 92 (69.7%) 13 8.4-17.6  
4 13 (9.8%) 3 2.0-4.0  
  1. IT, interval time; KPS, Karnofsky performance score