www.biomedcentral.com

Table 3
Relative risk assessment for baseline caries as predictor and caries incidence after 5 years as outcome
Variable	Baseline		After 5 years				P value^†and relative risk
	Baseline		Dental caries		Caries free
	n	%	n	%	n	%
Dental caries	85	4.6	85	100	-	-	P<0.001
Caries Free	1745	95.4	464	26.6	1281	73.4	RR=3.78
Total	1830	100	549	30.0	1281	70.0	3.48<RR<4.10

^†Two tailed statistical significance at the 5% level.

Masood et al. BMC Public Health 2012 12:989 doi:10.1186/1471-2458-12-989

Table 3