Table 3.

Multiple linear regression model for dental caries

Model I	R	R2	Adjusted R2	SE	R2 change	P-value
1	0.24*	0.05	0.05	3.94	0.05	0.05
2	0.31†	0.09	0.09	3.97	0.04	0.05
3	0.61‡	0.37	0.37	3.94	0.28	0.001
4	0.77§	0.59	0.59	3.91	0.22	0.001

^*Predictors: school.

^†Predictors: school, gender.

^‡Predictors: school, gender, frequency of cleaning teeth.

^§Predictors: school, gender, frequency of cleaning teeth, frequency of between-meal sugar consumption.