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Table 3 Summary of various prognosticators and development of treatment failure (BNI IV-V)

From: Refractory trigeminal neuralgia treatment outcomes following CyberKnife radiosurgery

Variable Good outcome Treatment failure P-value
No of patients 18 (72%) 7 (28%) 0.05
Gender    
Male 10 3 0.51
Female 8 4  
Age    
≥70 years 7 3 0.81
<70 years 11 4  
Diabetes    0.05
Yes 2 3  
No 16 4  
Multiple Sclerosis    0.88
Yes 3 1  
No 14 6  
Side of Pain    
Right 9 5 0.38
Left 9 2  
Duration of    
Symptoms    
>8 years 12 4 0.74
<8 years 6 3  
Dose    
60 Gy 14 5 0.68
>60 Gy 4 2  
New Bothersome    0.20
Facial Numbness 4 7  
Yes 14 0  
No    
Post-treatment BNI    
Facial Numbness    
I-II 10 7 0.04
III-IV 8 0  
Prior Surgery    
Yes 13 4 0.40
No 5 3