Format
A data frame with 118 observations on the following 15 variables.
group- a factor with levels $D^-$, $D^0$
$D^+$, the $D^-$ group has CDR (clinical demential
rating)=0, i.e., no dementia group; the $D^0$ group has
CDR=0.5, i.e., mild dementia and the $D^+$ group has CDR=1,
Alzheimer's disease.
FACTOR1- a numeric vector, measurements on the
neuropsychometric test for “global factor”.
ktemp- a numeric vector, measurements on the
neuropsychometric test for “temporal factor”.
kpar- a numeric vector, measurements on the
neuropsychometric test for “parietal factor”.
kfront- a numeric vector, measurements on the
neuropsychometric test for “frontal factor”.
zpsy004- a numeric vector, measurements on the
neuropsychometric test for “longical memory”.
zpsy005- a numeric vector, measurements on the
neuropsychometric test for “digital span forward”.
zpsy006- a numeric vector, measurements on the
neuropsychometric test for “digital span backward”.
zinfo- a numeric vector, measurements on the
neuropsychometric test for “information”.
zbentc- a numeric vector, measurements on the
neuropsychometric test for “visual retention (10s)”.
zbentd- a numeric vector, measurements on the
neuropsychometric test for “visual retention (copy)”.
zboston- a numeric vector,a numeric vector,
measurements on the neuropsychometric test for “boston
naming”.
zmentcon- a numeric vector,measurements on the
neuropsychometric test for “mental control”.
zworflu- a numeric vector,measurements on the
neuropsychometric test for “word fluency”.
zassc- a numeric vector,measurements on the
neuropsychometric test for “associate learning”.
Source
Xiong, C. and van Belle, G. and Miller, J.P. and Morris, J.C. (2006)
Measuring and Estimating Diagnostic Accuracy When There
Are Three Ordinal Diagnostic Groups. Statistics In Medicine 25
7 1251--1273. Sorandt M, Hill RD. (1989) Very mild snile dementia of the Alzheimer type. II
Psychometric test performance. Archives of Neurology 46 383--386.