title: Which aspects of an oral health-related quality of life measure are mainly associated with global ratings of oral health in children?
abstract: OBJECTIVE
  To assess the associations of global subjective ratings of oral health with different aspects of an oral health-related quality of life measure, namely total Oral Impacts on Daily Performances (OIDP) and Child-Oral Impacts on Daily Performances (Child-OIDP) scores, extent and intensity of oral impacts, the different performance scores and oral impacts attributed to certain groups of oral conditions.
  
  
  METHODS
  This study was part of the Sixth Thailand National Oral Health Survey. One thousand and sixty-six 12-year-olds and 815 15-year-olds were interviewed on their OHRQoL using Child-OIDP and OIDP indices, respectively, and rated their overall oral problems on 3-point and 5-point scales, respectively. Associations of global rating of oral health with different Child-OIDP/OIDP outcome variables were estimated using Spearman's rank correlations and logistic regressions.
  
  
  RESULTS
  Child-OIDP/OIDP scores were significantly associated with global ratings. Intensity was associated with global ratings, whereas extent was not. Impacts of 'very little' intensity were associated with a slightly higher chance of having poorer oral health perceptions. Global ratings were associated most with oral impacts attributed to dental caries, but not with the impacts related to natural process, such as eruption. Eating, cleaning teeth, emotional stability and smiling, plus social contact in 15-year-olds were performances associated with global ratings. Fifteen-year-old girls were more likely to perceive more oral problems than boys.
  
  
  CONCLUSIONS
  Associations of global ratings of oral health with Child-OIDP/OIDP scores were mainly due to the intensity of impacts. Global ratings were related to multidimensional aspects of children's quality of life.
authors.affiliation: Department of Community Dentistry, Chulalongkorn University, Bangkok, Thailand.
authors.forename: Sudaduang
authors.initials: S
authors.lastname: Krisdapong
authors.forename: Aubrey
authors.initials: A
authors.lastname: Sheiham
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D009909:Oral Health / Q000592:standards / Q000706:statistics & numerical data*; D011788:Quality of Life; D012737:Sex Factors; D009057:Stomatognathic Diseases / Q000453:epidemiology; D013785:Thailand / Q000453:epidemiology
keywords: adolescents; children; global ratings; oral health; quality of life