From: Comparative randomized study of continuous serratus anterior plane block versus continuous paravertebral block in post-mastectomy pain
Group P (mean ± SD)
Group S (mean ± SD)
P value
Age (years)
44.6 ± 4.6
45.2 ± 4.5
0.610
Body mass index (kg/m2)
26.8 ± 2.0
26.2 ± 1.8
0.206
Duration of surgery (min)
149.4 ± 10.1
151.1 ± 11.2
0.533