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Table 2 Comparison between the two groups regarding pain at 6, 12, 18, 24, 30, 36, 42, and 48 h after surgery

From: Comparative study between continuous adductor canal block and intravenous morphine for postoperative analgesia in total knee arthroplasty

Pain Group A Group B t P
6 h, mean ± SD 3.37 ± 0.84 6.63 ± 0.69 15.613 0.001
12 h, mean ± SD 2.41 ± 0.50 4.85 ± 0.53 17.355 0.001
18 h, mean ± SD 1.41 ± 0.50 3.85 ± 0.53 17.355 0.001
24 h, mean ± SD 1.37 ± 0.49 2.78 ± 0.42 11.262 0.001
30 h, mean ± SD 1.22 ± 0.42 3.30 ± 0.47 17.126 0.001
36 h, mean ± SD 1.11 ± 0.32 2.63 ± 0.49 13.439 0.001
42 h, mean ± SD 1.11 ± 0.32 2.56 ± 0.51 12.527 0.001
48 h, mean ± SD 1.19 ± 0.40 2.44 ± 0.51 10.18 0.001
  1. t independent sample t test; Pearson Chi-square
  2. p value > 0.05 NS; p value < 0.05 S; p value < 0.001 HS
  3. HS highly significant, SD standard deviation, sig. significance
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