Analgesic effect of ultrasound-guided bilateral transversus abdominis plane block in laparoscopic gastric cancer

Table 2 Comparison of visual analog scale scores between two groups (points, mean ± SD)

Group	6 h after surgery	12 h after surgery	24 h after surgery	48 h after surgery
TAPB group (n = 45)	2.53 ± 0.44	2.31 ± 0.39	2.01 ± 0.31	1.32 ± 0.29
Epidural anesthesia group (n = 40)	2.78 ± 0.39	2.69 ± 0.45	2.55 ± 0.37	1.92 ± 0.36
t value	2.757	4.171	7.319	8.501
P value	0.007	< 0.001	< 0.001	< 0.001

SD: Standard deviation; TAPB: Transversus abdominal plane block.