Table 2.

Comparison of the secondary outcomes of subjects in the matched cohorts

Covariates	Control group	ESPB group	P
N	115	115
VAS pain score	3.0 (2.0, 4.0)	2.0 (1.0, 2.0)	< 0.001
Number of PCIA pump compressions	8.0 (2.0, 14.0)	2.0 (2.0, 5.0)	< 0.001
Rescue analgesia (%)	24 (20.9)	6 (5.2)	< 0.001
Nausea and vomiting (%)	10 (8.7)	2 (1.7)	0.018
Length of stay (days)	7.0 (6.0, 8.0)	7.0 (5.0, 7.0)	0.097

VAS visual analog scale, PCIA patient-controlled intravenous analgesic