title: Performance of the CogState computerized battery in the Mayo Clinic Study on Aging.
abstract: BACKGROUND
  The feasibility and validity of brief computerized cognitive batteries at the population-level are unknown.
  
  
  METHODS
  Nondemented participants (n = 1660, age 50-97 years) in the Mayo Clinic Study on Aging completed the computerized CogState battery and standard neuropsychological battery. The correlation between tests was examined and comparisons between CogState performance on the personal computer (PC) and iPad (n = 331), and in the clinic vs. at home (n = 194), were assessed.
  
  
  RESULTS
  We obtained valid data on greater than 97% of participants on each test. Correlations between the CogState and neuropsychological tests ranged from -0.462 to 0.531. Although absolute differences between the PC and iPad were small and participants preferred the iPad, performance on the PC was faster. Participants performed faster on Detection, One Card Learning, and One Back at home compared with the clinic.
  
  
  CONCLUSIONS
  The computerized CogState battery, especially the iPad, was feasible, acceptable, and valid in the population.
authors: Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA. Electronic address: mielke.michelle@mayo.edu.
authors: Michelle M
authors: MM
authors: Mielke
authors: Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA.
authors: Mary M
authors: MM
authors: Machulda
authors: Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.
authors: Clinton E
authors: CE
authors: Hagen
authors: Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.
authors: Kelly K
authors: KK
authors: Edwards
authors: Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA.
authors: Rosebud O
authors: RO
authors: Roberts
authors: Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
authors: V Shane
authors: VS
authors: Pankratz
authors: Department of Neurology, Mayo Clinic, Rochester, MN, USA.
authors: David S
authors: DS
authors: Knopman
authors: Department of Radiology, Mayo Clinic, Rochester, MN, USA.
authors: Clifford R
authors: CR
authors: Jack
authors: Department of Neurology, Mayo Clinic, Rochester, MN, USA.
authors: Ronald C
authors: RC
authors: Petersen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis* / Q000453:epidemiology; D003201:Computers; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006761:Hospitals; D006798:Housing; D006801:Humans; D008297:Male; D008875:Middle Aged; D008910:Minnesota / Q000453:epidemiology; D009483:Neuropsychological Tests
keywords: Cognitively normal; Computerized cognitive battery; Epidemiology; Mild cognitive impairment; Neuropsychology; Population-based cohort study