title: Oral health status in older adults with social security in Mexico City: Latent class analysis.
abstract: OBJECTIVE
  To explore the oral health status through a latent class analysis in elderly social security beneficiaries from Southwest Mexico City.
  
  
  METHODS
  Cross-sectional study of beneficiaries of the State Employee Social Security and Social Services Institute (ISSSTE, in Spanish) and the Mexican Institute of Social Security (IMSS, in Spanish) aged 60 years or older. Oral health conditions such as edentulism, coronal and root caries (DMFT and DFT ≥ 75 percentile), clinical attachment loss (≥ 4 mm), and healthy teeth (≤ 25 percentile) were determined. A latent class analysis (LCA) was performed to classify the oral health status of dentate patients.
  
  
  RESULTS
  In total, 336 patients were included (47.9% from the ISSSTE and 52.1% from the IMSS), with an average age of 74.4 (SD = 7.1) years. The 75th percentile of the DMFT = 23 and of the DFT = 2. Of the patients, 77.9% had periodontal disease. The 25th percentile of healthy teeth = 4. A three class model is adequate, with a high classification quality (Entropy = 0.915). The patients were classified as "Edentulous" (15.2%), "Class 1 = Unfavorable" (13.7%), "Class 2 = Somewhat favorable" (10.4%), and "Class 3 = Favorable" (60.7%). Using "Class 3 = Favorable" as a reference, there was an association (OR = 3.4; 95% CI = 1.8-6.4) between being edentulous and being 75 years of age and over, compared with the 60- to 74-year age group.
  
  
  CONCLUSIONS
  The oral health in elderly social security beneficiaries is not optimal. The probability of becoming edentulous increases with age. A three-class model appropriately classifies the oral health dimensions in the elderly population. Key words:Elderly, Latent class analysis (LCA), oral health, social security, Mexico.
authors.affiliation: Epidemiological Research and Health Services Unit, Aging Sub-unit. Siglo XXI National Medical Center. Mexican Institute for Social Security. Mexico City, Mexico ; Department of Public Health and Oral Epidemiology. School of Dentistry. National Autonomous University of Mexico. Mexico City, Mexico.
authors.forename: Sergio
authors.initials: S
authors.lastname: Sánchez-García
authors.affiliation: Department of Public Health and Oral Epidemiology. School of Dentistry. National Autonomous University of Mexico. Mexico City, Mexico.
authors.forename: Erika
authors.initials: E
authors.lastname: Heredia-Ponce
authors.affiliation: National Institute of Public Health. Cuernavaca, Morelos, Mexico.
authors.forename: Pablo
authors.initials: P
authors.lastname: Cruz-Hervert
authors.affiliation: Epidemiological Research and Health Services Unit, Aging Sub-unit. Siglo XXI National Medical Center. Mexican Institute for Social Security. Mexico City, Mexico.
authors.forename: Teresa
authors.initials: T
authors.lastname: Juárez-Cedillo
authors.affiliation: Epidemiological Research and Health Services Unit, Aging Sub-unit. Siglo XXI National Medical Center. Mexican Institute for Social Security. Mexico City, Mexico.
authors.forename: Angel
authors.initials: A
authors.lastname: Cárdenas-Bahena
authors.affiliation: Epidemiological Research and Health Services Unit, Aging Sub-unit. Siglo XXI National Medical Center. Mexican Institute for Social Security. Mexico City, Mexico.
authors.forename: Carmen
authors.initials: C
authors.lastname: García-Peña