Table 2.

Caries prevalence, DMFS, DMFT, and SiC index^a in 12-year-old Puerto Ricans by strata^b (2011)

Strata	n	Caries prevalence		DMFS			DMFT			SiC index
		Percent	p-valuec	Mean	SE	p-valued	Mean	SE	p-valued	Mean	SE	p-valued
Gender
Female	842	71	0.29	4.2	0.25	<0.001	2.6	0.14	0.01	5.8	0.21	0.001
Male	745	68		3.5	0.23		2.4	0.14		5.0	0.13
School type
Rural public	597	72	0.03	4.2	0.33	<0.001	2.7	0.17	<0.001	5.5	0.13	<0.001
Urban public	629	72	0.001	4.2	0.29	<0.001	2.7	0.19	<0.001	5.7	0.22	<0.001
Private	361	55	REF	2.5	0.30	REF	1.7	0.16	REF	3.9	0.21	REF
Gender and school type
Female, rural public	322	73	<0.01	4.5	0.40	<0.001	2.8	0.20	<0.001	5.5	0.18	<0.001
Male, rural public	275	71	0.02	4.0	0.37	<0.001	2.6	0.20	<0.001	5.6	0.22	<0.001
Female, urban public	338	73	<0.001	4.4	0.40	<0.001	2.8	0.23	<0.001	6.1	0.40	<0.001
Male, urban public	291	71	<0.01	3.9	0.34	<0.001	2.6	0.22	<0.001	5.4	0.19	<0.001
Female, private	182	60	0.06	2.9	0.44	<0.001	1.9	0.25	<0.001	4.2	0.36	<0.01
Males, private	179	50	REF	2.0	0.29	REF	1.4	0.17	REF	2.8	0.27	REF

^aUnadjusted caries prevalence, DMFS, DMFT and SiC index estimates are weighted using normalized inverse probability weights

^bDefined by gender, school type (3 groups) and the combination of school type and gender

^c p-values were obtained from multivariable logistic regression analysis, adjusting for gender, school type (3 groups) and the 11 health reform regions

^d p-values were obtained from multivariable Poisson regression analysis, adjusting for gender, school type (3 groups) and the 11 health reform regions