Table 7.

Oral health knowledge and attitude in two groups at baseline and after a year (mean ± SD).

Knowledge and attitude	Experimental group	Control group	Z	P
Oral health knowledge
Baseline	5.88 ± 1.28	6.15 ± 1.26	−1.780	0.075
After 1 year	7.09 ± 0.84	6.52 ± 0.94	−4.418	<0.001*
% Change	20.58	6.02
Oral health attitude
Baseline	3.89 ± 0.34	3.88 ± 0.49	−0.081	0.935
After 1 year	3.95 ± 0.22	3.92 ± 0.31	−0.062	0.951
% Change	1.54	1.03

^*Statistically significant at P < 0.05, SD, Standard Deviation.