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Table 3 Percentages of patients with their NRS scores 6-months postoperatively in both groups

From: Epidural analgesia is not superior to systemic postoperative analgesia with regard to preventing chronic or neuropathic pain after thoracotomy

NRS CRO Group EDA Group p
   n = 28  n = 32  
NRS 0 79% 74% n.s.
NRS 1-3 22% 16% n.s.
NRS 4-6 0% 9% n.s.
NRS 7-10 0% 0% n.s.
  1. CRO Group, Systemic pain therapy group; EDA Group, Epidural analgesia group; n, Number of patients, NRS (numeric rating scale from 0 = no pain to 10 = worst pain imaginable) preoperatively, 6-months postoperatively.