Fig. 4From: Efficacy and safety of pulsed radiofrequency modulation of thoracic dorsal root ganglion or intercostal nerve on postherpetic neuralgia in aged patients: a retrospective studyThe changes in SF-36 of the two groups. DRG group, dorsal root ganglion pulsed radiofrequency group. ICN group, intercostal nerve pulsed radiofrequency group group. **P < 0.010 compared to DRG group. SF-36, Short-form 36 health/survey questionnaireBack to article page