Table 2.

Results of multivariate poisson regression to the prevalence of early childhood caries

	PR and IC 95,0%
Variables	Univariate	Adjusted	P value
• Family income
No	3.58 (1.80 a 7.12)	2.42 (1.20 a 4.88)	p = 0.009*
Less than or equal to minimum wage ($ 282.00)	2.50 (1.36 a 4.61)	2.15 (1,30 a 3.54)
More than one minimum wage	1,00	1,00
• Birth weight
Low	8.40 (5.66 a 12.46)	7.09 (3.91 a 12.86)	p < 0.001*
Normal	1,00	1,00
• Gestational age
Premature	6.11 (4.35 a 8.58)	1.39 (0.89 a 2.19)	p = 0.149
Term	1.00	1.00
• Risk nutritional
Normal weight	1.00	1.00	p < 0.001*
Obesity	3,40 (1.89 a 6.11)	6,24 (3.06 a 12.72)

(*):Significant at 5.0%.