PainVision® Apparatus for Assessment of Efficacy of Pulsed Radiofrequency Combined with Pharmacological Therapy in the Treatment of Postherpetic Neuralgia and Correlations with Measurements

Table 4

Relationship between changes for persistent pain in PD, VAS, SF-Mcgill, and NRSSIS at postoperative 48 hours.

	PD vs. VAS	SF-Mcgill					PD vs. NRSSIS
		PD vs. sensory score	PD vs. effective score	PD vs. total score	PD vs. VAS	PD vs. PPI
	0.453	0.459	0.458	0.583	0.453	0.498	0.276
	0.008	0.007	0.008	0.001	0.008	0.003	0.12
	33	33	33	33	33	33	33

PD: pain degree, VAS: visual analog scale, SF-Mcgill: short form Mcgill pain questionnaire, NRSSIS: numeric rate scale sleep interference score, PPI: present pain intensity, and vs.: versus.