Patient Complications after Interscalene Block: A Retrospective Comparison of Liposomal Bupivacaine to Nonliposomal Bupivacaine

Table 1

Baseline characteristics between the two groups.

Covariate	LB (N = 784)	Non-LB (N = 734)	value
Age (years)	56.4 (15.4)	55.0 (15.8)	0.095
Weight (kg)	87.8 (21.3)	88.5 (21.1)^1	0.518
Male	392 (50%)	430 (58.6%)	<0.001
ASA 1	118 (15.1%)	149 (20.3%)	0.010
ASA 2	412 (52.6%)	384 (52.3%)
ASA 3	254 (32.4%)	201 (27.4%)

¹One non-LB weight observation missing. LB: liposomal bupivacaine. Non-LB: nonliposomal bupivacaine. Continuous covariates presented mean (standard deviation) with a value from two-sample t-test, categorical covariates presented as count (%) with value from chi-squared test.