Table 4.

Relationship between dental caries experience of the surveyed children and selected independent variables (final model of multi-factor ANOVA) (N = 700)

Independent variable	Group	Beta	SE (Beta)	Significance	Bonferroni Comparison
Snack frequency (times per day)	≥2	0.54	0.26	p = 0.04
	<2 #
Visited a dentist	Yes	1.47	0.35	p < 0.01
	No #
Parental dental knowledge	Score 0-7a	1.24	0.46	p < 0.01	c < b, a
	Score 8-14b	1.02	0.28
	Score 15-21c #
Family income (HKD)	≤ 10000 a	1.54	0.33	p < 0.01	c < b, a
	10000 – 20000 b	1.33	0.32
	≥ 20000 c #

F-value = 11.14; df = 6; p < 0.001; R² = 0.088, # Reference category.