Which Alzheimer patients are at risk for rapid cognitive decline?
In the current study of 1062 Alzheimer's disease (AD) patients, we employed receiver operating characteristic curve analysis to identify characteristics of patients at increased risk for rapid cognitive decline. The patients are participants at one of the nine Alzheimer's Disease Research Centers of California. Rapid decline was defined as a 3-point or greater loss on the Mini-Mental State Examination (MMSE) per year, post visit. The independent variables were age at clinic visit, age at symptom onset of AD, MMSE at patient visit, years of education, gender, ethnicity, living arrangement, presence of aphasia, delusions, hallucinations, and extrapyramidal signs. Receiver operating characteristic curve analysis indicated that AD patients presenting with moderate to severe aphasia, age at clinic visit of 75 years or less, and an MMSE greater than 7 were at increased risk for rapid cognitive decline. This information could help clinicians target these patients for pharmacologic interventions, facilitate long-term care planning, and potentially create savings by delaying or stabilizing the course of the disease.
O'Hara
Ruth
R
Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford University, Stanford, California 94305-5550, USA.
Thompson
Jean M
JM
Kraemer
Helena C
HC
Fenn
Catherine
C
Taylor
Joy L
JL
Ross
Leslie
L
Yesavage
Jerome A
JA
Bailey
Amber M
AM
Tinklenberg
Jared R
JR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000145:classification / Q000503:physiopathology* / Q000628:therapy; D001037:Aphasia / Q000503:physiopathology; D003072:Cognition Disorders / Q000503:physiopathology* / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D012372:ROC Curve; D012307:Risk Factors