Table 3.

Caries prevalence, DMFS, DMFT, and SiC index^a in 12-year-old Puerto Ricans^b (1997 and 2011)

Year/	n	Caries prevalence		DMFS			DMFT			SiC
School type
		Percent	p-valuec	Mean	SE	p-valued	Mean	SE	p-valued	Mean	SE	p-valued
1997
Rural public	537	84	0.06	7.2	0.83	<0.001	4.2	0.37	<0.001	7.4	0.33	<0.001
Urban public	635	82	0.03	6.5	0.36	<0.001	3.8	0.18	<0.001	7.3	0.14	<0.001
Private	263	75	REF	4.7	0.56	REF	3.0	0.35	REF	5.8	0.26	REF
All	1,435	81		6.4	0.42		3.8	0.20		7.3	0.17
2011
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
All	1,587	69		3.9	0.20		2.5	0.12		5.6	0.12

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

^bAmong all and by public-private school strata

^c p-values were obtained from multivariable logistic regression analysis, adjusting for gender and 11 health reform regions

^d p-values were obtained from multivariable Poisson regression models, adjusting for gender and 11 health reform regions