title: Validation of a new mass screening tool for cognitive impairment: Cognitive Assessment for Dementia, iPad version.
abstract: BACKGROUND
  We have developed a new screening test for dementia that runs on an iPad and can be used for mass screening, known as the Cognitive Assessment for Dementia, iPad version (CADi). The CADi consists of items involving immediate recognition memory for three words, semantic memory, categorization of six objects, subtraction, backward repetition of digits, cube rotation, pyramid rotation, trail making A, trail making B, and delayed recognition memory for three words. The present study examined the reliability and validity of the CADi.
  
  
  METHODS
  CADi evaluations were conducted for patients with dementia, healthy subjects selected from a brain checkup system, and community-dwelling elderly people participating in health checkups.
  
  
  RESULTS
  CADi scores were lower for dementia patients than for healthy elderly individuals and correlated significantly with Mini-Mental State Examination scores. Cronbach's alpha values for the CADi were acceptable (over 0.7), and test-retest reliability was confirmed via a significant correlation between scores separated by a one-year interval.
  
  
  CONCLUSIONS
  These results suggest that the CADi is a useful tool for mass screening of dementia in Japanese populations.
authors.affiliation: Department of Neurology, Shimane University, Izumo, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Onoda
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Hamano
authors.forename: Yoko
authors.initials: Y
authors.lastname: Nabika
authors.forename: Atsuo
authors.initials: A
authors.lastname: Aoyama
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takayoshi
authors.forename: Tomonori
authors.initials: T
authors.lastname: Nakagawa
authors.forename: Masaki
authors.initials: M
authors.lastname: Ishihara
authors.forename: Shingo
authors.initials: S
authors.lastname: Mitaki
authors.forename: Takuya
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Oguro
authors.forename: Kuninori
authors.initials: K
authors.lastname: Shiwaku
authors.forename: Shuhei
authors.initials: S
authors.lastname: Yamaguchi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D034201:Computers, Handheld; D003704:Dementia / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D009483:Neuropsychological Tests; D015203:Reproducibility of Results
keywords: dementia; early detection; iPad; mass screening