Publications by authors named "Wong Yim Heng"
Introduction: This study aimed to examine the effects of age, period (historical events), and cohort (generational impact) (APC) on caries prevalence and mean DMFT among Singapore schoolchildren from 2007 to 2019.
Methods: Anonymised records of all 6-year-old primary 1 (P1), 11-year-old primary 6 (P6), and 14-year-old secondary 3 (S3) students before the start of each school year between 2007 and 2019 were extracted from the Integrated Dental Electronic Assessment System (IDEAS), categorised by school level, ethnicity, and sex. Poisson regression and partial least squares regressions were applied to estimate APC effects.
Caries trajectories from childhood to adolescence: Analysis of data from a nationwide school dental service.
Community Dent Oral Epidemiol
December 2024
Objectives: The aim of the study was to assess patterns of longitudinal changes in caries status among school-going children in Singapore.
Methods: Dental records for a single cohort of students who received dental examinations in six standard examination years between 2009 and 2017 were analysed (n = 24 699). Group-based trajectory modelling with a zero-inflated Poisson distribution was carried out to determine dental caries trajectories in the permanent dentition.
Objectives: This study aimed to describe caries prevalence and experience trends of permanent teeth among Singapore schoolchildren between 2007 and 2019.
Methods: Anonymized records of all 6-year-old Primary 1 (P1), 11-year-old Primary 6 (P6) and 14-year-old Secondary 3 (S3) before the start of each school year were extracted from the Integrated Dental Electronic Assessment System (IDEAS) by school level, ethnicity and sex. Prais-Winsten regression was used to assess trends of mean decayed, missing and filled teeth (DMFT) and caries prevalence (% DMFT > 0) among the schoolchildren by school level, with reported Average Annual Percentage Change (AAPC) together with respective 95% confidence interval (CI).