Table 2.

Comparison of visual analog scale pain scores between the three groups

VAS scores at post-surgery time points	Study groupsa			P-value
	Group C (n = 39)	Group E (n = 42)	Group Q (n = 39)
VAS at rest
2 h	0 (0, 1)	0 (0, 1.25)	0 (0, 1)	0.597
6 h	0 (0, 1)	0 (0, 1)	1 (0, 1)	0.346
18 h	0 (0, 2)	0 (0, 1)	0 (0, 1)	0.311
24 h	0 (0, 1)	0 (0, 1)	0 (0, 1)	0.419
48 h	0 (0, 1)	0 (0, 1)	0 (0, 1)	0.712
VAS on movement
2 h	1 (0, 2)	1 (1, 2)	1 (1, 2)	0.914
6 h	1 (1, 2)	1 (1, 2)	1 (1, 2)	0.445
18 h	2 (1, 3)	1 (1, 2)	1 (1, 2)	0.064
24 h	2 (1, 4)	2 (2, 3)	2 (1, 2)	0.196
48 h	1 (1, 2)	1 (1, 2)	1 (1, 2)	0.565

Values are expressed as the median with the inter-quartile range (P25, P75) in parentheses

VAS Visual analog scale

^aGroup C, group receiving conventional care, with no nerve block; group E, group receiving erector spinae plane block (ESPB); group Q, group receiving posterior quadratus lumborum block (posterior QLB)