Table 4.

Standardised partial regression coefficients (β) and odds ratios in multivariate logistic regression analysis for predicting the prevalence of caries.

Independent variable	Category	β	Odds ratio	95% CI			P
				Low	–	High
FMR at least in elementary school	No	0.12	1
	Yes		0.58	0.40	–	0.84	.004
Sex	Male	0.11	1
	Female		1.69	1.10	–	2.50	.008
Age (years)	18	0.16	1
	19		1.67	0.99	–	2.78	n.s.
	20		2.41	1.01	–	5.79	.048
	More than 20		2.33	1.34	–	4.04	.003
Snack intake	No	0.04	1
	Sometimes		0.64	0.29	–	1.44	n.s.
	Everyday		0.95	0.59	–	1.53	n.s.
Use of interdental brushes	No	0.05	1
	Yes		0.81	0.56	–	1.18	n.s.
Use of fluoride toothpaste	No	0.00	1
	Yes		1.03	0.24	–	4.48	n.s.
Tooth-brushing frequency	Once/day	-0.05	1
	Twice/day		1.59	0.79	–	3.19	n.s.
	More than twice/day		0.98	0.61	–	1.56	n.s.

Dependent variable: Caries free 0, Caries 1.

CI, confidence interval; FMR, fluoride mouth rinse; n.s., not statistically significant.

Nagelkerke R² = 0.078.