A simple method to rule out dementia with temporal orientation

Rochelle E. Tractenberg, Myron F. Weiner, Paul S. Aisen, Jeffrey A. Kaye, Jong Ling Fuh

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Objective: To explore the performance of a test of temporal orientation (TTO) comprising four items derived from the Mini-Mental State Examination over 4 years. Methods: Responses were obtained from two large cohorts participating in longitudinal studies of aging in the United States (352 normal elderly, 98 persons with very mild probable or possible Alzheimer's disease). Sensitivity, specificity, and predictive value (positive, PV+, negative, PV-) of the TTO were estimated for each of four annual visits. Results: When four correct answers were treated as "oriented to time" and 0 to 3 correct answers were treated as "not oriented to time," sensitivity (to the presence of AD) ranged from 46.0% to 69.2% and PV+ ranged from 32.1% to 49.5%. Specificity (for normal cognition) decreased from 93.2% at the first visit to 81.3% at the fourth visit; TTO performed most reliably in terms of PV-, the probability of normal cognitive function given orientation to time (TTO = 4), which ranged from 92.8% to 95.4%. Conclusion: Given the stability and strength of the predictive negative value of a dichotomized TTO over time, a TTO could contribute to monitoring normal cognitive functioning in longitudinal studies in which cognitive status is not the primary focus. Prospective validation of the TTO is warranted.

Original languageEnglish (US)
Pages (from-to)28-32
Number of pages5
JournalAlzheimer's and Dementia
Volume3
Issue number1
DOIs
StatePublished - Jan 1 2007

Keywords

  • Aged
  • Dementia
  • Epidemiologic methods
  • Longitudinal
  • Orientation

ASJC Scopus subject areas

  • Epidemiology
  • Health Policy
  • Developmental Neuroscience
  • Clinical Neurology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience

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