Table 1

Patients’ demographics, block type and block time

	Music	Midazolam	P value
N	77	80
Women, n (%)	52 (67%)	36 (45%)	0.1
Age in years, mean (SD)	45 (15.6)	46 (16)	0.7
Race, n (%)			0.08
White	52 (68%)	50 (63%)
Black	21 (27%)	23 (29%)
Asian	4 (5%)	5 (6%)
Other	0	2 (2%)
General block type, n (%)			0.8
Upper extremity	59 (77%)	63 (79%)
Type of block	29 Interscalene (49%) 20 Supraclavicular (34%) 7 Infraclavicular (12%) 2 Axillary (3%) 1 Ulnar (2%)	41 Interscalene (65%) 12 Supraclavicular (19%) 8 Infraclavicular (13%) 1 Axillary (2%) 1 Ulnar (2%)
Lower extremity	18 (23%)	17 (21%)
Type of block	12 Femoral (67%) 2 Adductor canal (11%) 3 Popliteal (17%) 1 Missing (5%)	14 Femoral (82%) 3 Popliteal (18%)
Block time, min, mean (SD)	6.7 (4.2)	7 (4.2)	0.5

Data are presented as frequency and ratios. Block time and patients' age are presented as mean (SD). P is significant if p<0.05; t-test was used to compare age and block time. χ² test was used to compare gender, race and block types.