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

Table 2

Comparison between the landmark and ultrasound techniques in IJV group (A) according to the number of attempts and time of cannulation.

	Landmark IJV (n = 100)	Ultrasound IJV (n = 100)	Z
Number of attempts
Min–Max	1.0–6.0	1.0–3.0	2.553	0.011
Mean ± SD	1.54 ± 1.03	1.21 ± 0.50
Median	1.0	1.0
Time of cannulation
Min–Max	90.0–420.0	60.0–180.0	8.965	<0.001
Mean ± SD	125.65 ± 72.74	80.87 ± 22.73
Median	98.0	73.50

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