title: Cognitive impairment and dementia in elderly people living in rural Benin, west Africa.
abstract: OBJECTIVE
  Dementia is increasing as a priority public health problem because of the ageing of the world population. Our goal was to estimate dementia and cognitive impairment prevalence in an elderly population of rural Benin.
  
  
  METHODS
  In a door-to-door survey, elderly people aged 65 years and above were screened using the Community Screening Interview for Dementia and the Five-Word Test.
  
  
  RESULTS
  The prevalence of cognitive impairment was 10.4% and that of dementia was 2.6%. Age, current depressive disorder and absence of the APOE epsilon2 allele were significantly associated with cognitive impairment.
  
  
  CONCLUSIONS
  Prevalence of dementia and cognitive impairment appears to be lower in this study than in developed countries.
authors.affiliation: Institute of Neuroepidemiology and Tropical Neurology, Tropical and Compared Neuro Epidemiology, IFR 145 GEIST, University of Limoges, Limoges, France.
authors.forename: Maëlenn
authors.initials: M
authors.lastname: Guerchet
authors.forename: Dismand
authors.initials: D
authors.lastname: Houinato
authors.forename: Moussiliou Noël
authors.initials: MN
authors.lastname: Paraiso
authors.forename: Nicolas
authors.initials: N
authors.lastname: von Ahsen
authors.forename: Philippe
authors.initials: P
authors.lastname: Nubukpo
authors.forename: Markus
authors.initials: M
authors.lastname: Otto
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Clément
authors.forename: Pierre-Marie
authors.initials: PM
authors.lastname: Preux
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Dartigues
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D001057:Apolipoproteins E / Q000235:genetics; D001541:Benin / Q000453:epidemiology; D001794:Blood Pressure / Q000502:physiology; D003072:Cognition Disorders / Q000453:epidemiology* / Q000523:psychology*; D003704:Dementia / Q000453:epidemiology* / Q000523:psychology*; D005260:Female; D005838:Genotype; D006306:Health Surveys; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D011569:Psychiatric Status Rating Scales; D011597:Psychomotor Performance / Q000502:physiology; D012737:Sex Factors; D011795:Surveys and Questionnaires
chemical_list: D001057:Apolipoproteins E