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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