Comparison of the effects of one-level and bi-level pre-incisional erector spinae plane block on postoperative acute pain in video-assisted thoracoscopic surgery; a prospective, randomized, double-blind trial

Table 3 Rates of VAS scores > 3 values evaluated at 6 time periods

	One-Level ESPB (n:30)	Bi-Level ESPB (n:30)	p*
VASr (> 3/10)	0.00 (0.00-0.17)	0.00 (0.00-0.00)	0.065
VASc (> 3/10)	0.42 ( 0.13-0.50)	0.20 (0.00-0.33)	0.011

Continuous variables are expressed as the median (Q₁: first quartile – Q₃: third quartile). Continuous variables were compared with the Mann-Whitney U Test*. Statistically significant p-values are in bold. VASr: Visual analog scale at rest; VASc: Visual analog scale at coughing; ESPB: Erector Spinae Plane Block

ISSN: 1471-2253