Water fluoridation and ethnic inequities in dental caries profiles of New Zealand children aged 5 and 12–13 years: analysis of national cross-sectional registry databases for the decade 2004–2013

Table 2 Crude and standardized annual numbers (%) of examined 5-year old children in New Zealand who had no obvious decay experience (caries-free) together with mean dmft

^aUp-scaled to national figures based on (i) Statistic New Zealand’s annual population estimates of children by ethnicity, (ii) fluoridation exposure estimates, modelled using a quadratic regression model from the observed annual data over the study period by ethnicity, and (iii) assuming unobserved children’s measurements can be estimated by the observed values for each ethnicity/fluoridation/year combination

ISSN: 1472-6831