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Table 2 Postoperative numeric rating scale-11 pain scores: median (IQR), and first analgesic request time: mean ± standard deviation from Mann–Whitney U-test

From: The analgesic efficacy of bilateral superficial cervical plexus block for thyroid surgery under general anesthesia: a prospective cohort study

GroupBlock group (n = 37)Non-block group (n = 37)p-value
NRS-11 at immediate postoperative time0 (5)6 (4)0.001
NRS-11 at 2nd h2 (6)7 (2)< 0.001
NRS-11 at 6th h2 (4)5 (3)0.001
NRS-11 at 12th h0 (3)4 (3)< 0.001
NRS-11 at 24th h0 (1)3 (3)< 0.001
First analgesic request time (min)a132.3 ± 71.571.4 ± 60.00.009
  1. N = 74
  2. aIndependent t-test