Table 2. Comparison of the Mean and SD of Scores of Knowledge and Constructs of the Theory of Planned Behavior before and after the Intervention .

Knowledge and Model Constructs		Before the intervention	After the intervention	p
		Mean (SD)	Mean (SD)
Knowledge	Intervention	5.8(2.1)	7.7(1.9)	0.001
	Control	5.5(2.31)	5.7(2.19)	0.386
	p*	0.712	0.003
Attitude	Intervention	35.5(11.5)	48.4(8.9)	<0.001
	Control	34.2(12.3)	35(13.6)	0.612
	p*	0.823	<0.001
Subjective norms	Intervention	11.8(8.1)	24.5(8.6)	<0.001
	Control	12.6(7.4)	13.1(8.9)	0.415
	p*	0.902	0.0006
Perceived behavioral control	Intervention	11.4(10.3)	13.3(8.8)	0.086
	Control	10.9(11.2)	11.2(10.8)	0.211
	p**	0.661	0.045
Behavioral intention	Intervention	18.6(7.4)	31.8(5.1)	<0.001
	Control	17.9(7.2)	18.7(8.3)	0.732
	p*	0.815	<0.001

* Independent t-test, **Mann-Whitney test