Table 2.

Comparison of adjusted mean percentage scores of knowledge and attitude within the intervention and control group (n=50).^a

Time	Intervention group		Control group
	Adjusted mean difference (95% CI)	P value	Adjusted mean difference (95% CI)	P value
Postintervention knowledge score−preintervention knowledge score	2.65 (0.75, 4.55)	.007	0.66 (−0.91, 2.23)	.40
Postintervention attitude score−preintervention attitude score	0.77 (−2.17, 3.70)	.60	−3.00 (−7.65, 1.65)	.20

^aTwo-way mixed-design repeated measure ANCOVA was applied and adjusted for smoking.