title: Memory performance on the story recall test and prediction of cognitive dysfunction progression in mild cognitive impairment and Alzheimer's dementia.
abstract: OBJECTIVE
  To determine the factors that influence diagnosis and differentiation of patients with mild cognitive impairment (MCI) and Alzheimer's dementia (AD) by comparing memory test results at baseline with those at 1-2-year follow up.
  
  
  METHODS
  We consecutively recruited 23 healthy participants, 44 MCI patients and 27 patients with very mild AD according to the National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Related Disorder Association criteria for probable Alzheimer's disease and Petersen's clinical diagnostic criteria. We carried out detailed neuropsychological tests, including the Story Recall Test (SRT) and the Seoul Verbal Learning Test, for all participants. We defined study participants as the "progression group" as follows: (i) participants who showed conversion to dementia from the MCI state; and (ii) those with dementia who showed more than a three-point decrement in their Mini-Mental State Examination scores with accompanying functional decline from baseline status, which were ascertained by physician's clinical judgment.
  
  
  RESULTS
  The SRT delayed recall scores were significantly lower in the patients with mild AD than in those with MCI and after progression. Lower (relative risk 1.1, 95% confidence interval 0.1-1.6) and higher SRT delayed recall scores (relative risk 2.1, confidence interval 1.0-2.8), and two-test combined immediate and delayed recall scores (relative risk 2.0, confidence interval 0.9-2.3; and relative risk 2.8, confidence interval 1.1-4.2, respectively) were independent predictors of progression in a stepwise multiple adjusted Cox proportional hazards model, with age, sex, depression and educational level forced into the model.
  
  
  CONCLUSIONS
  The present study suggests that the SRT delayed recall score independently predicts progression to dementia in patients with MCI. Geriatr Gerontol Int 2017; 17: 1603-1609.
authors.affiliation: Institute of Convergence Bio-Health, Dong-A University, Busan, Korea.
authors.forename: Jong-Hwan
authors.initials: JH
authors.lastname: Park
authors.affiliation: Institute of Convergence Bio-Health, Dong-A University, Busan, Korea.|Department of Health Care Science, Dong-A University, Busan, Korea.
authors.forename: Hyuntae
authors.initials: H
authors.lastname: Park
authors.affiliation: Department of Neurology, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Sang Wuk
authors.initials: SW
authors.lastname: Sohn
authors.affiliation: Department of Neurology, Jinhae Health Center, Changwon, Korea.
authors.forename: Sungjae
authors.initials: S
authors.lastname: Kim
authors.affiliation: Institute of Convergence Bio-Health, Dong-A University, Busan, Korea.|Department of Neurology, College of Medicine, Dong-A University, Busan, Korea.|Busan Metropolitan Dementia Center, Busan, Korea.
authors.forename: Kyung Won
authors.initials: KW
authors.lastname: Park
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis* / Q000523:psychology*; D060825:Cognitive Dysfunction / Q000175:diagnosis* / Q000209:etiology; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011939:Mental Recall; D008875:Middle Aged; D009483:Neuropsychological Tests; D011237:Predictive Value of Tests; D013997:Time Factors
keywords: Story Recall test; cognitive function; dementia; mild cognitive impairment; verbal memory