title: Family and school environmental predictors of sleep bruxism in children.
abstract: OBJECTIVE
  To identify potential predictors of self-reported sleep bruxism (SB) within children's family and school environments.
  
  
  METHODS
  A total of 65 primary school children (55.4% males, mean age 9.3 ± 1.9 years) were administered a 10-item questionnaire investigating the prevalence of self-reported SB as well as nine family and school-related potential bruxism predictors. Regression analyses were performed to assess the correlation between the potential predictors and SB.
  
  
  RESULTS
  A positive answer to the self-reported SB item was endorsed by 18.8% of subjects, with no sex differences. Multiple variable regression analysis identified a final model showing that having divorced parents and not falling asleep easily were the only two weak predictors of self-reported SB. The percentage of explained variance for SB by the final multiple regression model was 13.3% (Nagelkerke's R² = 0.133). While having a high specificity and a good negative predictive value, the model showed unacceptable sensitivity and positive predictive values. The resulting accuracy to predict the presence of self-reported SB was 73.8%.
  
  
  CONCLUSIONS
  The present investigation suggested that, among family and school-related matters, having divorced parents and not falling asleep easily were two predictors, even if weak, of a child's self-report of SB.
authors: Faculty of Primary School Formative Sciences, University of Florence, Italy.
authors: Debora
authors: D
authors: Rossi
authors: Daniele
authors: D
authors: Manfredini
mesh_terms: D001143:Arousal; D002648:Child; D004243:Divorce; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D012044:Regression Analysis; D012307:Risk Factors; D012574:Schools; D057566:Self Report; D012680:Sensitivity and Specificity; D012890:Sleep; D020186:Sleep Bruxism / Q000175:diagnosis* / Q000209:etiology*; D012931:Social Environment