BACKGROUND: Recent studies have shown that decreases in both letter fluency and category fluency may be present in addition to memory impairment in single-domain amnestic mild cognitive impairment (aMCI). However, the clinical utility of these fluency measures is unclear. The aim of this study was to determine what, if any, diagnostic value letter and category fluency provide in differentiating single-domain aMCI from normal cognition. METHODS: Data from 66 individuals [33 cognitively normal (CN) and 33 aMCI] between the ages of 66 and 87 years participating in the Florida Alzheimer's Disease Research Center were compared on the Controlled Oral Word Association Test (COWAT)-FAS and Category Fluency test, both in terms of raw and scaled scores. RESULTS: Participants were matched on age, education and sex. Two-tailed independent sample t-tests found statistically significant differences between the CN and aMCI groups for both raw and scaled scores of COWAT-FAS and Category Fluency (p < 0.001). Logistic regression analyses found that COWAT-FAS and Category Fluency did not significantly improve diagnostic accuracy when combined with the Hopkins Verbal Learning Test-Revised delayed recall. CONCLUSION: Although decreased COWAT-FAS and Category Fluency performance may be present in single-domain aMCI, these tests do not improve the ability of the Hopkins Verbal Learning Test-Revised delayed recall to differentiate aMCI from CN individuals.
BACKGROUND: Recent studies have shown that decreases in both letter fluency and category fluency may be present in addition to memory impairment in single-domain amnestic mild cognitive impairment (aMCI). However, the clinical utility of these fluency measures is unclear. The aim of this study was to determine what, if any, diagnostic value letter and category fluency provide in differentiating single-domain aMCI from normal cognition. METHODS: Data from 66 individuals [33 cognitively normal (CN) and 33 aMCI] between the ages of 66 and 87 years participating in the Florida Alzheimer's Disease Research Center were compared on the Controlled Oral Word Association Test (COWAT)-FAS and Category Fluency test, both in terms of raw and scaled scores. RESULTS:Participants were matched on age, education and sex. Two-tailed independent sample t-tests found statistically significant differences between the CN and aMCI groups for both raw and scaled scores of COWAT-FAS and Category Fluency (p < 0.001). Logistic regression analyses found that COWAT-FAS and Category Fluency did not significantly improve diagnostic accuracy when combined with the Hopkins Verbal Learning Test-Revised delayed recall. CONCLUSION: Although decreased COWAT-FAS and Category Fluency performance may be present in single-domain aMCI, these tests do not improve the ability of the Hopkins Verbal Learning Test-Revised delayed recall to differentiate aMCI from CN individuals.
Authors: Reisa A Sperling; Paul S Aisen; Laurel A Beckett; David A Bennett; Suzanne Craft; Anne M Fagan; Takeshi Iwatsubo; Clifford R Jack; Jeffrey Kaye; Thomas J Montine; Denise C Park; Eric M Reiman; Christopher C Rowe; Eric Siemers; Yaakov Stern; Kristine Yaffe; Maria C Carrillo; Bill Thies; Marcelle Morrison-Bogorad; Molly V Wagster; Creighton H Phelps Journal: Alzheimers Dement Date: 2011-04-21 Impact factor: 21.566
Authors: John A Schinka; David A Loewenstein; Ashok Raj; Mike R Schoenberg; Jessica L Banko; Huntington Potter; Ranjan Duara Journal: Am J Geriatr Psychiatry Date: 2010-08 Impact factor: 4.105
Authors: J Zugic Soares; R Pettersen; J Saltyte Benth; A B Knapskog; G Selbæk; N Bogdanovic Journal: J Nutr Health Aging Date: 2019 Impact factor: 4.075
Authors: Valerie C Anderson; Ian J Tagge; Aaron Doud; Xin Li; Charles S Springer; Joseph F Quinn; Jeffrey A Kaye; Katherine V Wild; William D Rooney Journal: Tissue Barriers Date: 2021-09-18
Authors: Zimu Wu; Robyn L Woods; Trevor T J Chong; Suzanne G Orchard; Raj C Shah; Rory Wolfe; Elsdon Storey; Kerry M Sheets; Anne M Murray; John J McNeil; Joanne Ryan Journal: Front Med (Lausanne) Date: 2022-06-27