Table 5.

Retention of oral health knowledge and behavior in the intervention group (n = 110)

Variables	Categories	Mean	95% CI for diff		p value
		diff	Lower	Upper
Knowledge scores	Baseline vs 1 year	− 1.345	− 1.69	− 1.00	< 0.001
	1 year vs one and a half years	− 0.282	− 0.63	0.07	0.159
	Baseline vs one and a half years	− 1.627	− 1.98	− 1.28	< 0.001
Behavior scores
	Baseline vs 1 year	− 2.04	− 2.41	− 1.67	< 0.001
	1 year vs one and a half years	0.36	− 0.01	0.74	0.060
	Baseline vs one and a half years	− 1.67	− 2.05	− 1.30	< 0.001

diff, difference; CI, confidence interval; vs, versus