Prevalence of aging-associated cognitive decline in an Italian elderly population: Results from cross-sectional phase of Italian Project on Epidemiology of Alzheimer's disease (IPREA)

Emanuele Scafato, Claudia Gandin, Lucia Galluzzo, Silvia Ghirini, Francesco Cacciatore, Antonio Capurso, Vincenzo Solfrizzi, Francesco Panza, Alberto Cocchi, Domenico Consoli, Giuliano Enzi, Giovanni B. Frisoni, Carlo Gandolfo, Simona Giampaoli, Domenico Inzitari, Stefania Maggi, Gaetano Crepaldi, Sergio Mariotti, Patrizia Mecocci, Massimo MottaRoberto Negrini, Demetrio Postacchini, Franco Rengo, Gino Farchi, S. Martire, P. Gallina, M. Baldereschi, A. Di Carlo, M. Conti, S. Galluzzi, G. Cruciani, C. Giuli, V. Solfrizzi, F. Panza, P. Abete, P. Forti, P. Tabanelli, G. Zuccalà, C. Calabrese, G. Sica, A. Estraneo, F. Naso, G. Torcasio, P. Rinaldi, V. Serafini, U. Senin

Research output: Contribution to journalArticlepeer-review

Abstract

Background and aims: The prevalence of the preclinical phase of dementia varies greatly, according to the diagnostic criteria and assessment procedures applied. The purpose of this study was to estimate the prevalence of cognitive impairment according to the Aging-Associated Cognitive Decline (AACD) diagnostic criteria in an Italian elderly population. Methods: In a multicenter community-based prospective study, 4785 Italian subjects aged 65-84 years, randomly selected from the registries of 12 Italian municipalities, were assessed by personal and informant interviews, physical and neurological examinations and an extensive neuropsychological battery. Results: Of these older subjects, 274 (9.2%) fulfilled all the AACD criteria, whereas 561 (18.8%) fulfilled only 3 of them (AACD-3). When the two groups diagnosed according to AACD criteria (AACD and AACD-3) were merged, the prevalence was 28.0% (28.3% for men, 27.6% for women). Two other groups of subjects were also identified: a) Subjects with Qbjective evidence of Cognitive Decline without cognitive complaints (OCD), 508 (17.0%), i.e., subjects with documented neuropsychological deficits, although neither subjects nor informants reported cognitive complaints; and b) Subjects with Cognitive Complaints without objective demonstrable cognitive deficits (CC), 44 (1.5%), i.e., subjects and/or informants reported cognitive complaints without evidence of neuropsychological deficits. Thus, taking into account the additional OCD group, a total of 1343 persons with cognitive impairment without dementia (45.0%) was identified. Conclusions: On the basis of our results, we estimate that 45% of our population-based Italian sample aged 65-84 years had some kind of cognitive deficits without dementia.

Original languageEnglish
Pages (from-to)440-449
Number of pages10
JournalAging clinical and experimental research
Volume22
Issue number5-6
DOIs
Publication statusPublished - Oct 2010

Keywords

  • Age-associated cognitive decline
  • Dementia
  • Elderly
  • Italy
  • Predementia syndromes
  • Prevalence

ASJC Scopus subject areas

  • Ageing
  • Geriatrics and Gerontology

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