TABLE 2.

Values of General Estimating Equation for the Central-Line Self-Efficacy Survey

Factor	β	Std Error	95% CI	p Value	Odds Ratio
Obtaining a clear image of the target vessel using the ultrasound machine	−0.316	0.9428	(−2.164, 1.531)	0.74	0.73
Locating the needle on the ultrasound image	−0.672	1.1453	(−2.917, 1.573)	0.56	0.51
Identifying the correct site of insertion on the skin for the introducer needle	1.878	1.5043	(−4.827, 1.070)	0.21	0.15
Using tactile feedback (sense of feel) during placement of the line	2.604	2.3863	(−2.073, 7.281)	0.28	13.51
Using the ultrasound image/transducer, identifying the correct vessel for puncture	0.302	1.3162	(−2.278, 2.882)	0.82	1.35
Using tactile feedback, identifying the correct vessel for puncture	2.514	2.3972	(−2.184, 7.213)	0.29	12.35
Advancing the introducer needle slowly and steadily	−1.322	1.228	(−3.729, 1.084)	0.28	0.26
Modifying the needle trajectory based on ultrasound feedback	0.078	1.339	(−2.546, 2.703)	0.95	1.08
Identifying when the introducer needle is in the correct location	−0.039	1.321	(−2.628, 2.550)	0.98	0.96
Using tactile feedback to help guide the introducer needle	3.762	1.7723	(0.288, 7.235)	**,0.03	43.03
Placing the introducer needle at the center of the vein in 1 attempt	−1.99	1.90949	(−4.136, 0.156)	*,0.07	0.13
Placing the introducer needle at the center of the vein in multiple attempts	−0.649	1.1986	(−2.998, 1.700)	0.59	0.52
Conducting the entire procedure without any mistakes	0.14	1.244	(−2.579, 2.299)	0.91	0.86
Conducting the entire procedure on a CVC simulator (manikin)	0.403	0.9951	(−1.547, .164)	0.69	1.49

^*p < 0.10.

^**p < 0.05.