Effects of Supraorbital Foramen Variations on the Treatment Efficacy of Radiofrequency Therapy for V1 Trigeminal Neuralgia: A Retrospective Study

Table 4

Comparison of the effective rate between the two groups at different time points after operation (n(%)).

	Hole (n = 25)	Notch (n = 29)	χ^2
1 d	25 (100.0)	29 (100.0)	—	—
0.5 y	23 (92.0)	24 (82.6)	1.016	0.313
1 y	20 (80.0)	19 (65.5)	1.404	0.236
2 y	19 (76.0)	14 (48.2)	4.342	0.037