Paravertebral block's effect on analgesia and inflammation in advanced gastric cancer patients undergoing transarterial chemoembolization and microwave ablation

Table 1 Patients’ baseline characteristics

Variable	PVB group (n = 28)	Control group (n = 30)	P value
Age (yr)	56.4 ± 9.2	58.3 ± 8.7	0.42
Sex (male/female)	16/12	18/12	0.72
Body mass index (kg/m2)	23.5 ± 3.1	24.2 ± 2.9	0.34
ASA physical status (I/II/III)	6/16/6	8/14/8	0.81
Tumor size (cm)	4.6 ± 1.2	4.8 ± 1.3	0.56
Tumor number (single/multiple)	12/16	14/16	0.77
Procedure duration (min)	82.5 ± 15.4	85.3 ± 16.2	0.51

Data are expressed as means ± SD or frequencies. ASA: American Society of Anesthesiologists; PVB: Paravertebral block.