Erector spinae plane block vs transversus abdominis plane block for visceral and somatic pain after laparoscopic appendectomy

Table 3 Comparison of postoperative somatic pain Visual Analog Scale scores between groups at different time points (scores), mean ± SD

Time point	State	ESPB group (n = 91)	TAPB group (n = 92)	t value	P value
2 hours postoperatively	Rest	2.4 ± 0.8	2.3 ± 0.9	0.798	0.426
	Activity	3.5 ± 1.0	3.4 ± 1.1	0.649	0.517
6 hours postoperatively	Rest	2.2 ± 0.7	2.1 ± 0.8	0.905	0.367
	Activity	3.2 ± 0.9	3.1 ± 0.9	0.754	0.452
12 hours postoperatively	Rest	1.8 ± 0.6	1.7 ± 0.7	1.054	0.293
	Activity	2.6 ± 0.8	2.5 ± 0.8	0.853	0.395
24 hours postoperatively	Rest	1.3 ± 0.5	1.2 ± 0.5	1.369	0.173
	Activity	1.9 ± 0.6	1.8 ± 0.6	1.133	0.259
48 hours postoperatively	Rest	0.7 ± 0.4	0.7 ± 0.4	0	1
	Activity	1.1 ± 0.5	1.0 ± 0.5	1.351	0.178

Repeated measures ANOVA for rest state: Time effect F (2.79, 505.01) = 298.72, P < 0.001; group effect F (1, 181) = 0.76, P = 0.384; interaction effect F (2.79, 505.01) = 0.38, P = 0.798 (Greenhouse-Geisser corrected); repeated measures ANOVA for activity state: Time effect F (2.85, 515.85) = 326.41, P < 0.001; group effect F (1, 181) = 0.89, P = 0.347; interaction effect F (2.85, 515.85) = 0.52, P = 0.712 (Greenhouse-Geisser corrected).

ESPB: Erector spinae plane block; TAPB: Transversus abdominis plane block.