Table 5 Comparison of postoperative analgesia effect between the two groups (case).

From: Opioid-free anesthesia with ultrasound-guided quadratus lumborum block in the supine position for lower abdominal or pelvic surgery: a randomized controlled trial

Project/group

Q group (n = 62)

C group (n = 60)

χ2

P

t0

Painless

7

14

3.103

0.078

Mild pain

51

41

3.188

0.074

Moderate pain

4

5

0.158

0.691

t1

No pain

15

6

4.311

0.038

Mild pain

41

38

0.104

0.747

Moderate pain

6

15

5.024

0.025

t2

No pain

23

11

5.340

0.021

Mild pain

35

38

0.601

0.438

Moderate pain

4

11

3.992

0.046

t3

No pain

31

14

9.314

0.002

Mild pain

31

39

2.805

0.094

Moderate pain

0

7

7.674

0.006

t4

No pain

47

34

5.006

0.025

Mild pain

15

24

3.503

0.061

Moderate pain

0

2

2.101

0.147

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