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Table 4 Comparison between the 2 groups regarding the medians of the NRS score

From: Pre-emptive quadratus lumborum block for laparoscopic bariatric surgery: a prospective randomized controlled study

Variable Group Q Group C P value
NRS at rest
 Immediate postoperatively 3 (2–3) 5 (3–6) 0.017
 2 h postoperatively 3 (2–3) 4 (3–5) 0.001
 4 h postoperatively 3 (2–3) 4 (2–4) 0.001
 6 h postoperatively 3 (2–3) 4 (2–5) 0.002
 8 h postoperatively 3 (3–5) 4 (2–6) 0.001
 12 h postoperatively 2 (2–4) 3 (2–4) 0.043
 16 h postoperatively 3 (2–4) 3 (2–5) 1.000
 20 h postoperatively 4 (2–5) 3 (2–5) 0.245
 24 h postoperatively 3 (2–3) 2 (2–3) 0.123
NRS with ambulation
 6 h postoperatively 1 (0–2) 4 (2–5) < 0.001
 8 h postoperatively 1 (0–1) 4 (3–4) < 0.001
 12 h postoperatively 1 (0–1) 4 (3–5) < 0.001
 16 h postoperatively 3 (1–3) 3 (3–5) 0.101
 20 h postoperatively 3 (2–4) 4 (3–5) 0.483
 24 h postoperatively 4 (3–4) 4 (3–4) n/a®
  1. Data presented as median (range). All P value measured by independent samples-median test
  2. ®The medians of NRS at 24 h postoperatively with ambulation are the same across both groups