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Table 2 Occurrence and characteristics of chronic postoperative pain in 3 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 13 6 0.04* 19
NRS 2.61 ± 0.87 2.66 ± 1.37 0.92  
Pain degree    0.56  
 Mild 11 5   16 (84.2%)
 Moderate 2 1   3 (15.8%)
 Severe 0 0   0 (0.0%)
Location    0.78  
 Partial incision 6 4   10 (52.7%)
 Chest wall 7 2   9 (47.3%)
Pain form    0.38  
 Spontaneous pain 3 3   6 (31.6%)
 Stretch pain 8 3   11 (57.9%)
 Cough pain 2 0   2 (10.5%)
Duration    0.32  
 Always 0 1   1 (5.3%)
 Intermittent 13 5   18 (94.7%)
Analgesic use    1.00  
 Unused 11 5   16 (84.2%)
 Used 2 1   3 (15.8%)
  1. CPSP Chronic postsurgical pain, NRS Numerical rating scales
  2. *Chi-square test, P < 0.05