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Table 8 Comparison of NRS values in particular groups on three subsequent days after the surgery

From: Assessment of postoperative pain management and comparison of effectiveness of pain relief treatment involving paravertebral block and thoracic epidural analgesia in patients undergoing posterolateral thoracotomy

NRS measurements PVB mean (SD) TEA mean (SD) P
NRS 1st day 4.33 (1.37) 3.93 (1.18) P = 0.206
NRS 2nd day 3.05 (0.88) 3.11 (1.27) P = 0.935
NRS 3rd day 2.55 (1.06) 2.37 (1.25) P = 0.496