Table 4.

The association between level of knowledge and demographic factors

	What level of knowledge do you have about POCUS/emergency ultrasound?
	Elementary knowledge		Basic knowledge to perform a diagnostic study		Sufficient knowledge to perform diagnostic studies on a routine basis		I have complete training and I can work as a trainer in ultrasound		p-value
	Count	Row N %	Count	Row N %	Count	Row N %	Count	Row N %
What is the type of emergency medical facility you work for?
Regional Emergency Medical Center	13	23.6%	2	3.6%	29	52.7%	11	20.0%	0.000*
Local Emergency Medical Center	1	2.2%	21	46.7%	22	48.9%	1	2.2%
Please choose your position
1st year of resident	1	20.0%	2	40.0%	2	40.0%	0	0.0%	0.000*
2nd year of resident	1	8.3%	2	16.7%	9	75.0%	0	0.0%
3rd year of resident	2	14.3%	5	35.7%	7	50.0%	0	0.0%
4th year of resident	0	0.0%	1	7.7%	9	69.2%	3	23.1%
General physician	0	0.0%	0	0.0%	7	46.7%	8	53.3%
Specialist	10	24.4%	13	31.7%	17	41.5%	1	2.4%
Please select the number of years of service from your specialist.
1–5 years	8	22.2%	5	13.9%	18	50.0%	5	13.9%	0.078
6–10 years	5	11.9%	11	26.2%	25	59.5%	1	2.4%
11–15 years	1	11.1%	3	33.3%	3	33.3%	2	22.2%
16–20 years	0	0.0%	4	30.8%	5	38.5%	4	30.8%
How many ultrasound machines do your Emergency Medical Centers own? (including hand-held machine)
1	9	19.1%	15	31.9%	21	44.7%	2	4.3%	0.002*
2	2	9.5%	2	9.5%	8	38.1%	9	42.9%
3	0	0.0%	3	27.3%	8	72.7%	0	0.0%
4	0	0.0%	0	0.0%	1	100.0%	0	0.0%
5 and more	3	15.0%	3	15.0%	13	65.0%	1	5.0%
Have you ever used an ultrasound device?
No	1	6.3%	9	56.3%	5	31.3%	1	6.3%	0.008*
Yes	13	15.5%	14	16.7%	46	54.8%	11	13.1%