title: Confirmatory factor analysis on the health domains of the Child Perceptions Questionnaire.
abstract: BACKGROUND
  The Child Perceptions Questionnaire for children aged 11-14 years (CPQ(11-14)) with 37 items (full questionnaire) and short forms with 16 and 8 items were developed in Toronto as measures of the oral-health-related quality of life (OHRQoL) for children.
  
  
  OBJECTIVE
  To confirm the four hypothesized health domains (oral symptoms, functional limitations, emotional well-being and social well-being) of CPQ(11-14) in measuring OHRQoL for children in Hong Kong.
  
  
  METHODS
  The instrument was administered to 542 children aged 12 years. Confirmatory factor analysis (CFA) was used to confirm the health domains of the full and short forms of CPQ(11-14).
  
  
  RESULTS
  The usual goodness-of-fit measurements indicated that the model using all 37 items fitted the data below the acceptable level, while the models with 16 items and 8 items fitted the data well.
  
  
  CONCLUSIONS
  The hypothesized factor structure with the four health domains of the short forms of CPQ(11-14) has been confirmed by CFA. The results in the current study indicated that the items used in the short forms contain sufficient information in measuring OHRQoL for children in Hong Kong.
authors.affiliation: Dental Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR.
authors.forename: Abby W H
authors.initials: AW
authors.lastname: Lau
authors.forename: May C M
authors.initials: MC
authors.lastname: Wong
authors.forename: K F
authors.initials: KF
authors.lastname: Lam
authors.forename: Colman
authors.initials: C
authors.lastname: McGrath
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D016009:Chi-Square Distribution; D002648:Child; D003627:Data Interpretation, Statistical; D019140:Dental Care for Children / Q000523:psychology / Q000706:statistics & numerical data*; D003753:Dental Health Surveys; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D009059:Mouth Diseases / Q000453:epidemiology / Q000503:physiopathology / Q000523:psychology; D020380:Needs Assessment; D009909:Oral Health; D015995:Prevalence; D016016:Proportional Hazards Models; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012647:Self-Assessment; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D014076:Tooth Diseases / Q000453:epidemiology / Q000503:physiopathology / Q000523:psychology; D014098:Toothache / Q000453:epidemiology / Q000503:physiopathology / Q000523:psychology