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Table 3 Chronic postoperative pain in 6 months after operation

From: Effect of lidocaine perioperative infusion on chronic postsurgical pain in patients undergoing thoracoscopic radical pneumonectomy

Variables Control group (n = 28) Lidocaine group (n = 29) p-value Total
Number of people with CPSP 4 4 1.00a 8
NRS 2.00 ± 1.41 1.25 ± 0.50 0.37b  
Pain degree
 Mild 3 4   7 (87.5%)
 Moderate 1 0   1 (12.5%)
 Severe 0 0   0 (0.0%)
Location    0.23a  
 Partial incision 1 2   3 (37.5%)
 Chest wall 3 2   5 (62.5%)
Pain form    0.11a  
 Spontaneous pain 1 0   1 (12.5%)
 Stretch pain 2 2   4 (50.0%)
 Cough pain 2 1   3 (37.5%)
Duration    0.46a  
 Always 0 1   1 (12.5%)
 Intermittent 4 3   7 (87.5%)
Analgesic use    1.00a  
 Unused 4 4   8 (100%)
 used 0 0   0 (0.00%)
  1. CPSP chronic postsurgical pain, NRS numerical rating scales
  2. a Fisher exact test, b NStudent t-test