title: Reliability and validity of Arabic Rapid Estimate of Adult Literacy in Dentistry (AREALD-30) in Saudi Arabia.
abstract: BACKGROUND
  To evaluate the reliability and validity of Arabic Rapid Estimate of Adult Literacy in Dentistry (AREALD-30) in Saudi Arabia.
  
  
  METHODS
  A convenience sample of 200 subjects was approached, of which 177 agreed to participate giving a response rate of 88.5%. Rapid Estimate of Adult Literacy in Dentistry (REALD-99), was translated into Arabic to prepare the longer and shorter versions of Arabic Rapid Estimate of Adult Literacy in Dentistry (AREALD-99 and AREALD-30). Each participant was provided with AREALD-99 which also includes words from AREALD-30. A questionnaire containing socio-behavioral information and Arabic Oral Health Impact Profile (A-OHIP-14) was also administered. Reliability of the AREALD-30 was assessed by re-administering it to 20 subjects after two weeks. Convergent and predictive validity of AREALD-30 was evaluated by its correlations with AREALD-99 and self-perceived oral health status, dental visiting habits and A-OHIP-14 respectively. Discriminant validity was assessed in relation to the educational level while construct validity was evaluated by confirmatory factor analysis (CFA).
  
  
  RESULTS
  Reliability of AREALD-30 was excellent with intraclass correlation coefficient of 0.99. It exhibited good convergent and discriminant validity but poor predictive validity. CFA showed presence of two factors and infit mean-square statistics for AREALD-30 were all within the desired range of 0.50 - 2.0 in Rasch analysis.
  
  
  CONCLUSIONS
  AREALD-30 showed excellent reliability, good convergent and concurrent validity, but failed to predict the differences between the subjects categorized based on their oral health outcomes.
authors.forename: Santosh Kumar
authors.initials: SK
authors.lastname: Tadakamadla
authors.affiliation: Department of Preventive Dentistry, Faculty of Dentistry, Jazan University, P,O Box: 114, Jazan 45142, Saudi Arabia. faeq_ali@yahoo.com.
authors.forename: Mir Faeq Ali
authors.initials: MF
authors.lastname: Quadri
authors.forename: Amir H
authors.initials: AH
authors.lastname: Pakpour
authors.forename: Abdulaziz M
authors.initials: AM
authors.lastname: Zailai
authors.forename: Mohammed E
authors.initials: ME
authors.lastname: Sayed
authors.forename: Mohammed
authors.initials: M
authors.lastname: Mashyakhy
authors.forename: Aadil S
authors.initials: AS
authors.lastname: Inamdar
authors.forename: Jyothi
authors.initials: J
authors.lastname: Tadakamadla
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D003729:Dental Care; D006233:Persons with Disabilities; D004522:Educational Status; D005260:Female; D057220:Health Literacy; D006304:Health Status; D006801:Humans; D007398:Interpersonal Relations; D007802:Language; D008297:Male; D009909:Oral Health; D010147:Pain Measurement; D011788:Quality of Life; D015203:Reproducibility of Results; D012529:Saudi Arabia; D012649:Self Concept; D013315:Stress, Psychological / Q000523:psychology; D014175:Translating