title: Psychometric properties of the General Oral Health Assessment Index (GOHAI) and dental status of an elderly Mexican population.
abstract: OBJECTIVE
  To evaluate the psychometric properties of the Geriatric/General Oral Health Assessment Index, Spanish version (GOHAI-Sp) and their relationship with the dentition status of an elderly Mexican population as a discriminatory validation.
  
  
  METHODS
  A cross-sectional study was conducted among persons over 60 years of age. A Spanish version the GOHAI-Sp validated in Spain in institutionalized geriatric patients was used. Clinical evaluation was done in order to determine experience with coronal and root caries.
  
  
  RESULTS
  Measurement of internal consistency of the GOHAI gave a Cronbach alpha coefficient of 0.77 for the 12 items. In factorial analysis, one factor alone was capable of explaining 30.6 percent of the total variance. The factor that was most apparent in the factorial analysis of the GOHAI had coefficients > 0.30 for the 12 items. The Kaiser-Meyer-Olkin measure of simple adequacy was 0.81 and the Bartlett's sphericity test was 1,748.55 with 66 degrees of freedom (P < 0.001). There was a statistically significant difference in the GOHAI scores between the responses to self-perception of oral and general health (P < 0.001). Also, there was a statistically significant low correlation coefficient between the missing and filled components of the DMFT index and the number of healthy and functional teeth (P < 0.05).
  
  
  CONCLUSIONS
  The GOHAI has acceptable psychometric properties, discriminates between self-perception of oral health and self-perception of general health, and correlates with past caries experience measured by the DMFT index.
authors.affiliation: Unidad de Investigación Epidemiológica yen Servicios de Salud, Area Envejecimiento, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México, DF México.
authors.forename: Sergio
authors.initials: S
authors.lastname: Sánchez-García
authors.forename: Erika
authors.initials: E
authors.lastname: Heredia-Ponce
authors.forename: Teresa
authors.initials: T
authors.lastname: Juárez-Cedillo
authors.forename: Katia
authors.initials: K
authors.lastname: Gallegos-Carrillo
authors.forename: Claudia
authors.initials: C
authors.lastname: Espinel-Bermúdez
authors.forename: Javier
authors.initials: J
authors.lastname: de la Fuente-Hernández
authors.forename: Carmen
authors.initials: C
authors.lastname: García-Peña
mesh_terms: D000368:Aged; D003430:Cross-Sectional Studies; D004245:DMF Index; D003753:Dental Health Surveys; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D009909:Oral Health; D011594:Psychometrics; D011788:Quality of Life; D017213:Root Caries / Q000453:epidemiology; D012647:Self-Assessment; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D014505:Urban Population