Table 1.

Demographic characteristics

	DT	ST	P-value
Gender: Male/Female (n)	32/8	30/10	0.59
Surgery Duration: Mean±SD (min)	57.2±3.2	56.3±4.1	0.14
Weight: Mean±SD (kg)	73.2±9.6	71.6	0.46
BMI: Mean±SD	24.9±3	24.4±2.9	0.45
Tourniquet pneumatic pressure	258±35	207±42	.0001
Age: Mean± SD	42.85±8.71	41.42±8.69	0.46
Block onset: Mean± SD(min)	4.18±0.42	4.35±0.44	0.76

DT: double tourniquet; ST: single tourniquet; Std Dev: standard deviation; BMI: body mass index