Dental caries status of students from migrant primary schools in Shanghai Pudong New Area

BMC Oral Health

Table 5 Multiple regression analysis for primary and permanent teeth dmft scores (N =1323)

Independent variables	Group	Beta	SE	95 % CI	P-value
Primary teeth
Brushing twice or more daily	Yes	−0.610	0.188	−0.978–0.241	<0.05
Brushing twice or more daily	No^a
Sweet snacks before Sleep without tooth brushing	Often⁄Occasionally	0.407	0.178	0.056–0.757	<0.05
Sweet snacks before Sleep without tooth brushing	Never^a
Dental visit within the past 12 months	Yes	1.042	0.214	0.622–1.462	<0.001
Dental visit within the past 12 months	No^a
Intercept		2.817	0.426		<0.001
Permanent teeth
Gender	Boys	−0.182	0.049	−0.287–0.093	<0.001
Gender	Girls^a
Daily sweet snacks	Yes	0.189	0.060	0.071–0.308	<0.05
Daily sweet snacks	No^a
Intercept		0.518	0.125		<0.001

^aReference category, Primary teeth Adjusted R² = 0.227, Permanent teeth Adjusted R² = 0.069

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