... responsible for the oral examination, and threeinterviewers, who administered the questionnaires. The parents were informed about the objectives of the studyand consent for interview and examinations ... owing to a longitudinal study design. Finally, the useof Poisson regression models instead ordinary logisticregression allowed complete utilization of original OIDP,a ranked data. The main ... andeconomic conditions, oral behaviors, use of dental serv-ices, among others. The response rate was 89.7% (n =359), and non-responses were mainly owing to familiesmoving out of the city.All the...