Table 2.

Crude (PR_c) and adjusted (PR_a) prevalence ratios for the prevalence of dental caries, recipients of Bolsa Família and other independent variables in schoolchildren aged from eight to 12 years. Pelotas, RS, Southern Brazil, 2010. Poisson regression analysis. (N = 1,107)

Independent variable		PRc	95%CI	p	PRa	95%CI	p
Maternal schooling (years)				0.015			–
	12 or more	1			–
	9 a 11	1.31	0.89;1.94
	5 a 8	1.81	1.23;2.66
	≥ 4	2.16	1.50;3.11
Family structure				0.080			–
	Nuclear	1			–
	Non-nuclear	1.16	0.98;1.36
Sex				0.272
	Male	1			–		–
	Female	1.10	0.93;1.29
Age (years)				< 0.001			< 0.001
	8	1			1
	9	0.98	0.70;1.35		0.94	0.68;1.29
	10	1.32	0.98;1.80		1.17	0.87;1.58
	11	1.67	1.24;2.24		1.48	1.11;1.96
	12	1.87	1.37;2.54		1.52	1.12;2.07
Presence of plaque (terciles)				< 0.001			< 0.001
	First	1			1
	Second	1.23	0.99;1.54		1.28	1.02;1.60
	Third	1.64	1.34;2.00		1.50	1.22;1.84
Fear of dentist				0.119			–
	No	1			–
	A little	1.26	1.03;1.54
	Yes	0.82	0.50;1.35
	Very much	1.06	0.73;1.53
	Bolsa Família			< 0.001			< 0.001
	No (private school)	1			1
	No (public school)	1.95	1.47;2.59		1.76	1.32;2.34
	Yes	2.29	1.70;3.08		2.00	1.47;2.69