Comparison of analgesic efficacy of different local anesthetic volumes for erector spinae plane block in thoracotomy patients; a prospective randomized trial

Table 1 Demographic characteristics and surgical features of patients

		30 ml ESPB ( n :30)	20 ml ESPB ( n :30)	p
Age, year *		51.40 ± 11,64	55.00 ± 9.45	0.194
Gender ^δ	Female	12 (40.0%)	9 (30.0%)	0.417
Gender ^δ	Male	18 (60.0%)	21 (70.0%)	0.417
BMI ^β		27.30 (23.30–28.50)	26.50 (24.20–29)	0.684
Duration of Anesthesia (minute) ^β		225 (210–270)	225 (210–270)	0.868
ASA ^δ	I I	12 (40.0%)	15(50.0%)	0.436
ASA ^δ	I I I	18 (60.0%)	15(50.0%)	0.436
Intraoperative Remifentanil Consumption (mcg)*		1049.17 ± 391.70	1013.33 ± 344.58	0.708

Continuous variables are expressed as either * the mean ± standard deviation (SD) or ^β the median (Q₁: first quartile – Q₃: third quartile), and categorical variables are expressed as either ^δ frequency or percentage. Continuous variables were compared with a student t-test or the Mann–Whitney U test, and categorical variables were compared using Pearson’s chi-square test or Fisher’s exact test. Statistically significant p-values are in bold. BMI Body mass index. ASA American Society of Anesthesiologists

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