TY - JOUR
T1 - Expanded Demographic Norms for Version 3 of the Alzheimer Disease Centers' Neuropsychological Test Battery in the Uniform Data Set
AU - Sachs, Bonnie C.
AU - Steenland, Kyle
AU - Zhao, Liping
AU - Hughes, Timothy M.
AU - Weintraub, Sandra
AU - Dodge, Hiroko H.
AU - Barnes, Lisa L.
AU - Craft, Suzanne
AU - Parker, Monica L.
AU - Goldstein, Felicia C.
N1 - Publisher Copyright:
Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - Background:Norms for the Uniform Data Set Version 3 Neuropsychological Battery are available for cognitively normal individuals based on age, education, and sex; however, these norms do not include race. We provide expanded norms for African Americans and whites.Methods:Data from 32 Alzheimer's Disease Centers (ADCs) and ADC affiliated cohorts with global Clinical Dementia Rating Scale (CDR) Dementia Staging Instrument scores of 0 were included. Descriptive statistics for each test were calculated by age, sex, race, and education. Multiple linear regressions were conducted to estimate the effect of each demographic variable; squared semipartial correlation coefficients measured the relative importance of variables.Results:There were 8313 participants (16% African American) with complete demographic information, ranging from 6600 to 7885 depending on the test. Lower scores were found for older and less educated groups, and African Americans versus whites. Education was the strongest predictor for most tests, followed in order by age, race, and sex. Quadratic terms were significant for age and education, indicating some nonlinearity, but did not substantially increase R2.Conclusions:Although race-based norms represent incomplete proxies for other sociocultural variables, the appropriate application of these norms is important given the potential to improve diagnostic accuracy and to reduce misclassification bias in cognitive disorders of aging such as Alzheimer disease.
AB - Background:Norms for the Uniform Data Set Version 3 Neuropsychological Battery are available for cognitively normal individuals based on age, education, and sex; however, these norms do not include race. We provide expanded norms for African Americans and whites.Methods:Data from 32 Alzheimer's Disease Centers (ADCs) and ADC affiliated cohorts with global Clinical Dementia Rating Scale (CDR) Dementia Staging Instrument scores of 0 were included. Descriptive statistics for each test were calculated by age, sex, race, and education. Multiple linear regressions were conducted to estimate the effect of each demographic variable; squared semipartial correlation coefficients measured the relative importance of variables.Results:There were 8313 participants (16% African American) with complete demographic information, ranging from 6600 to 7885 depending on the test. Lower scores were found for older and less educated groups, and African Americans versus whites. Education was the strongest predictor for most tests, followed in order by age, race, and sex. Quadratic terms were significant for age and education, indicating some nonlinearity, but did not substantially increase R2.Conclusions:Although race-based norms represent incomplete proxies for other sociocultural variables, the appropriate application of these norms is important given the potential to improve diagnostic accuracy and to reduce misclassification bias in cognitive disorders of aging such as Alzheimer disease.
KW - National Alzheimer Coordinating Center
KW - cognitive test norms
KW - neuropsychology
KW - uniform data set
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U2 - 10.1097/WAD.0000000000000388
DO - 10.1097/WAD.0000000000000388
M3 - Article
C2 - 32483017
AN - SCOPUS:85086106178
SN - 0893-0341
VL - 34
SP - 191
EP - 197
JO - Alzheimer Disease and Associated Disorders
JF - Alzheimer Disease and Associated Disorders
IS - 3
ER -