Table 3.

Practitioners' awareness and knowledge towards radiation protection according to their working area.

No.	Knowledge items	Response	Working area			P-value
			Academic sector (%)	Government sector (%)	Private sector (%)
1	Are you familiar with ALARA principle?	Yes	72.2a	61.1a	30b	0.007 ∗
		No	27.8	38.9	70
2	Are you familiar with the recommendations of the NCRP and ICRP?	Yes	33.6	36.1	30	0.893
		No	66.4	63.9	70
3	Are you aware of the radiation hazard symbol?	Yes	83.4	84.7	100	0.368
		No	16.6	15.3	0
4	Does digital radiography require less exposure than conventional?	Yes	76.2	91.7	70	0.056
		No	12.6	4.2	10
		I do not know	11.2	4.2	20
5	Do high-speed films reduce exposure?	Yes	70.4	81.9	80	0.334
		No	8.5	5.6	0
		I do not know	21.1	12.5	20
6	Specify the importance of the use of collimators and filters in dental radiography.	Very important + important	87.4	88.9	80	0.1
		Moderately important	6.7	9.7	10
		Of little importance + unimportant	5.8	1.4	10
7	What is the ideal distance of operator “Position Distance Rule” when exposed to dental radiography?	4ft., 90 o -135 o	5.8	4.2	0	0.656
		4ft, 60 o -90 o	8.5	5.6	20
		6ft, 90 o -135 o	71.7	72.2	60
		6ft, 60 o -90 o	13.9	18.1	20

^∗Significant at P < 0.05. The same superscript letters indicate no significant differences (P > 0.05).