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Research Article

Retrospective Analysis of Ultrasound-Guided Infraclavicular Block: Effect of Experience of Anesthesiologists on Volume of Local Anesthetic Administered

Table 1

Patient characteristics.


	Group I			Group II			Group III			Group IV			p
	Mean ± SD, n (%)		Median	Mean ± SD, n (%)		Median	Mean ± SD, n (%)		Median	Mean ± SD, n (%)		Median	p

Age	38.2 ± 14.7		35	38.6 ± 14.9		37	35.9 ± 14.7		33	35.7 ± 14.1		33	0.000
Sex
Female	227	36.1%		239	35.6%		215	29.9%		243	26.0%		0.000
Male	401	63.9%		433	64.4%		505	70.1%		690	74.0%		0.000
BMI	26.3 ± 4.8		26	26.1 ± 4.9		26	26.2 ± 5.1		25	25.9 ± 4.6		25	0.417
ASA
I	341	54.3%		331	49.3%		420	58.3%		633	67.8%		0.041
II	263	41.9%		324	48.2%		285	39.6%		285	30.5%
III	22	3.5%		17	2.5%		14	1.9%		14	1.5%
IV	2	0.3%		0	0.0%		1	0.1%		1	0.1%

Data were analyzed using the Kruskal–Wallis (Mann–Whitney U test) or chi-square test.

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