Table 3:

Mean scores according to clinical years

Clinical year		Overall results	Knowledge about imaging modalities	Knowledge about radiation risks	Knowledge about radiation safety principles
4	Mean	6.18	3.44	2.24	0.51
	SD	3.59	1.98	1.66	0.87
5	Mean	6.84	3.63	2.66	0.55
	SD	3.37	1.71	1.77	0.89
6	Mean	10.92	5.15	4.52	1.25
	SD	3.22	1.88	1.60	0.81

SD = standard deviation