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. 2015 Mar 31;2(1):16–23. doi: 10.15441/ceem.14.020

Table 4.

The frequency of ultrasonography use according to the presence of education programs

Frequency of use	For adult USG			For pediatric USG
Frequency of use	Education program (+) n=60	Education program (-) n=21	P-value^a)	Education program (+) n=17	Education program (-) n=64	P-value^a)
<1	0 (0)	4 (19.0)	< 0.001	0 (0)	45 (70.3)	<0.001
1–4	0 (0)	10 (47.7)		0 (0)	17 (26.6)
>5	60 (100)	7 (33.3)		17 (100)	2 (3.1)

Values are presented as number (%).

USG, ultrasonography.

^a)

Calculated by linear by linear association.