Table 1. Comparison of characteristics between the groups.

	Groups
Characteristics	PECS II	PS	p-value
Gender
Male	36 (72.0)	39 (78.0)	0.488b
Female	14 (28.0)	11 (22.0)
Age
Mean + SD	56.90 + 4.08	56.88 + 4.35	0.849
Median (min-max)	57 (48-67)	57 (45-64)
BMI
Mean + SD	30.14 + 4.19	30.78 + 2.44	0.336a
Median (min-max)	30.5 (18-39)	31 (23-35)
Block duration (h)
Mean + SD	2.18 0.56	5.26 + 0.78	0.001a
Median (min-max)	2 (1-3)	5 (4-6)
Ventilation duration (min)
Mean + SD	99.56 + 15.2	97.32 + 15.36	0.426a
Median (min-max)	100 (75-135)	90 (75-135)

aMann–Whitney U-test, bChi-squared test, *p < 0.05. BMI: body mass index.