TABLE 1.

Patient Characteristics

	Comparison	Standardized difference
Age	1-FNB vs. 2-FTB	0.059
	1-FNB vs. 3-ACB	−0.088
	2-FTB vs. 3-ACB	−0.158
Height	1-FNB vs. 2-FTB	−0.135
	1-FNB vs. 3-ACB	−0.035
	2-FTB vs. 3-ACB	0.088
Weight	1-FNB vs. 2-FTB	−0.164
	1-FNB vs. 3-ACB	−0.104
	2-FTB vs. 3-ACB	0.051
BMI	1-FNB vs. 2-FTB	−0.124
	1-FNB vs. 3-ACB	−0.114
	2-FTB vs. 3-ACB	0.006
ASA	1-FNB vs. 2-FTB	−0.006
	1-FNB vs. 3-ACB	0.012
	2-FTB vs. 3-ACB	0.006

An absolute SD higher than 0.1 is usually considered to indicate imbalance.ACB indicates adductor canal block; ASA, American Society of Anesthesiologists; BMI, body mass index; FNB, femoral nerve block; FTB, femoral triangle block.