Central Venous Catheter Insertion: A Scoring System for Evaluation of Both the Procedure and the Operator (CVCI Score/Gaber Score)

Table 5

Group B: comparison between landmark and ultrasound (SV) techniques according to our scoring system.

Score	Landmark SV (n = 100)		Ultrasound SV (n = 100)		χ^2
	No.	%	No.	%
4	0	0.0	0	0.0	—	—
5	70	70.0	49	49.0	9.150	0.002
6	9	9.0	30	30.0	14.047	<0.001
7	5	5.0	15	15.0	14.047	0.018
8	7	7.0	2	2.0	2.909
9	5	5.0	3	3.0	0.521
10	2	2.0	1	1.0	0.338
11	2	2.0	0	0.0	2.020

FE: Fisher Exact for Chi square test. ^∗: Statistically significant at p ≤ 0.05.