Efficacy and Safety of Botulinum Toxin A and Pulsed Radiofrequency on Postherpetic Neuralgia: A Randomized Clinical Trial

Table 4

Comparison of PHQ-9 scores at baseline and 24 weeks postoperation in both groups (n = 50, ).

	RF	BoNT-A	t
Baseline	11.62 ± 3.96	12.28 ± 4.24	−0.78	0.874
24 weeks postoperation	7.72 ± 5.00	8.16 ± 5.44	−0.04	0.416
t	3.94	4.22
	0.001	0.003