title: Validity and reliability of the Chronic Oral Mucosal Diseases Questionnaire in a UK population.
abstract: OBJECTIVE
  The objective of this study was to investigate the validity and reliability of a the Chronic Oral Mucosal Diseases Questionnaire in a UK population
  
  
  METHODS
  Two hundred patients with chronic oral mucosal disease (oral lichen planus, recurrent aphthous stomatitis, mucous membrane pemphigoid, pemphigus vulgaris) were enrolled in this study from the Oral Medicine Department of University College London Hospitals Trust (UCLHT) Eastman Dental Hospital. Individuals were interviewed using Oral Health Impact Profile (OHIP-14), Visual Analogue Scale (VAS) and Chronic Oral Mucosal Diseases Questionnaire (COMDQ), and the construct validity and internal reliability were examined.
  
  
  RESULTS
  Of the 200 study participants, 100 respondents had oral lichen planus, 42 had recurrent aphthous stomatitis and 58 had vesiculobullous conditions (mucous membrane pemphigoid or pemphigus vulgaris). With regard to construct validity, a moderate to good degree of convergent validity was found between OHIP-14 and VAS and most subscales and the total COMDQ score except the patient support subscale of COMDQ (0.21-0.37).
  
  
  CONCLUSIONS
  COMDQ is a valid and reliable patient-reported outcome measure for patients with chronic oral mucosal diseases in a UK population. It can be considered a valuable instrument in both clinical practice and in oral medicine research.
authors.affiliation: University Hospital Limerick, Limerick, Ireland.
authors.forename: Richeal
authors.initials: R
authors.lastname: Ni Riordain
authors.affiliation: Oral Medicine Unit, UCLH NHS Foundation Trust, Eastman Dental Hospital, UCL Eastman Dental Institute, London, UK.
authors.forename: Tim
authors.initials: T
authors.lastname: Hodgson
authors.affiliation: UCL Eastman Dental Institute London, University College London, London, UK.|Biomedical Research Centre, NIHR University College London Hospitals, London, UK.
authors.forename: Stephen
authors.initials: S
authors.lastname: Porter
authors.affiliation: UCL Eastman Dental Institute London, University College London, London, UK.|Biomedical Research Centre, NIHR University College London Hospitals, London, UK.
authors.forename: Stefano
authors.initials: S
authors.lastname: Fedele
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003625:Data Collection / Q000379:methods; D006801:Humans; D009059:Mouth Diseases / Q000473:pathology / Q000503:physiopathology* / Q000523:psychology*; D009909:Oral Health; D010147:Pain Measurement; D011379:Prognosis; D011594:Psychometrics / Q000379:methods; D011788:Quality of Life; D015203:Reproducibility of Results; D012944:Social Support; D011795:Surveys and Questionnaires; D006113:United Kingdom
keywords: chronic oral mucosal diseases; oral medicine; quality of life; validity and reliability