From: Ultrasound-guided thoracic paravertebral block vs pectoral nerve block for postoperative analgesia after modified radical mastectomy
Group A, PVB (n = 15)
Group B, PECS (n = 15)
t
p value
Range (min)
10–20
5–9
8.297
< 0.001**
Mean ± SD
15.20 ± 3.5
7.34 ± 1.1