Rasch model of the child perceptions questionnaire in multi-country data.

OBJECTIVE: To be fit-for-purpose, oral health-related quality of life instruments must possess a range of psychometric properties which had not been fully examined in the 16-item Short Form Child Perceptions Questionnaire for children aged 11 to 14 years (CPQ11-14 ISF-16). We used advanced statistical approaches to determine the CPQ's measurement accuracy, precision, invariance and dimensionality and analyzed whether age range could be extended from 8 to 15 years. METHODS: Fit to the Rasch model was examined in 6648 8-to-15-year-olds from Australia, New Zealand, Brunei, Cambodia, Hong Kong, Malaysia, Thailand, Germany, United Kingdom, Brazil and Mexico. RESULTS: In all but two items, the initial five answer options were reduced to three or four, to increase precision of the children's selection. Items 10 (Shy/embarrassed) and 11 (Concerned what others think) showed an 'extra' dependency between item scores beyond the relationship related to the underlying latent construct represented by the instrument, and so were deleted. Without these two items, the CPQ was unidimensional. The three oral symptoms items (4 Food stuck in teeth, 3 Bad breath and 1 Pain) were required for a sufficient person-item coverage. In three out of 14 items (21 %), Europe and South America showed regional differences in the patterns of how the answer options were selected. No differential item functioning was detected for age. CONCLUSION: Except for a few modifications, the present analysis supports the combination of items, the cross-cultural validity of the CPQ with 14 items and the extension of the age range from 8 to 15 years. CLINICAL SIGNIFICANCE: The valid, reliable, shortened and age-extended version of the CPQ resulting from this study should be used in routine care and clinical research. Less items and a wider age range increase its usability. Symptoms items are needed to precisely differentiate between children with higher and lower quality of life.

The effectiveness of Cognitive Behavioural Therapy in the reduction of dental anxiety in children.

Data sourcesCochrane Library, Embase, PubMed, Scopus, Web of Science, LILACS/BBO, PsycINFO, ClinicalTrials, ISRCTN registry, UK National Institute for Health and Care Excellence, International Clinical Trials Registry Platform, ProQuest and OpenGrey.Study selectionTwo independent and calibrated reviewers selected randomised controlled trials investigating cognitive behavioural therapy use in dentally anxious children.Data extraction and synthesisRisk of bias was assessed by two independent reviewers according to the Cochrane Collaboration tool. Clinical and methodological heterogeneity were assessed to determine whether a meta-analysis could be performed but the data were not similar enough and therefore a narrative synthesis is provided.ResultsSix studies were included, all written in English between 1980 and 2017. Two were completed in the United States, one in Jamaica, one in Iran, one in Sweden and one in Norway and included 269 patients in total ranging from 41 months to 18 years. Two studies had high risk of bias. In five studies, CBT patients showed significantly reduced levels of anxiety. In three studies improvement was observed in cooperation/behaviour. In two studies, avoidance behaviours improved.ConclusionsCBT has been shown in published literature to have a positive effect on childrens anxiety and co-operation; however the quality of evidence for this is low. There is no current consensus on which outcome measure/s should be used, which prevents meta-analysis of results. Further randomised controlled studies are required, ideally using the same outcome measures, to develop evidence based guidance on the use of CBT in dentally anxious children.

Social support and social network as intermediary social determinants of dental caries in adolescents.

OBJECTIVE: The aim of this study was to investigate the association between intermediary social determinants, namely social support and social network with dental caries in adolescents. METHODS: An adapted version of the WHO social determinants of health conceptual framework was used to organize structural and intermediary social determinants of dental caries into six blocks including perceived social support and number of social networks. A cross-sectional study was conducted with a representative sample of 542 students between 12 and 14 years of age in public schools located in the city of Dourados, Brazil in 2012. The outcome variables were caries experience (DMFT ≥ 1) and current dental caries (component D of DMFT ≥ 1) recorded by a calibrated dentist. Individual interviews were performed to collect data on perceived social support and numbers of social networks from family and friends and covariates. Multivariate Poisson regressions using hierarchical models were conducted. RESULTS: The prevalence of adolescents with caries experience and current dental caries was 55.2% and 32.1%, respectively. Adolescents with low numbers of social networks and low levels of social support from family (PR 1.47; 95% CI = 1.01-2.14) were more likely to have DMFT ≥ 1. Current dental caries was associated with low numbers of social networks and low levels of social support from family (PR 2.26; 95% CI = 1.15-4.44). CONCLUSION: Social support and social network were influential psychosocial factors to dental caries in adolescents. This finding requires confirmation in other countries but potentially has implications for programmes to promote oral health.