Efficacy of Internal Heat Acupuncture Combined with High-Voltage Long-Duration Pulsed Radiofrequency on Subacute Postherpetic Neuralgia: A Retrospective Study

Table 1

General data of patients.

	Number of cases	Age (years)	Gender (male/female)	Course of disease (months)	Chest/waist segment (example)
Group IHA-PRF	27	66.19 ± 10.792	13/14	1.74 ± 0.656	21/6
Group II-PRF	27	64.70 ± 10.894	12/15	1.74 ± 0.526	18/9
Group PRF	27	66.15 ± 11.055	14/13	1.78 ± 0.801	20/7
t/χ^2 value		0.161	0.297^a	0.027	0.847^a
value		0.852	0.862	0.973	0.646

^aThe value of χ².