Figure 1.

Geo-maps of caries risk in 3-6-years old children. Caries risk geo-maps of the Halland region (southwest Sweden) in 2006 and 2010, respectively, displaying, for each of the 66 residential parishes, the smoothed relative risk (SmRR) of caries (dmfs>0) among preschoolers (3-6years). The thicker borderlines delimit the six municipalities of Halland. The study population in year 2006 included 9,973 children; 84.0% caries-free (dmfs=0). The study population in year 2010 included 10,927 children; 88.6% caries-free. The ratio between the maximum and minimum SmRRs (considering the 66 parish-specific SmRRs) was 1.76/0.44=4.0 in 2006; 2.37/0.33=7.2 in 2010.

Strömberg et al. BMC Oral Health 2012 12:9   doi:10.1186/1472-6831-12-9
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