2019
DOI: 10.1002/mdc3.12767
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Factor Analysis of the Apathy Scale in Parkinson's Disease

Abstract: Background Background: The Apathy Scale (AS), a popular measure of apathy in Parkinson's disease (PD), has been somewhat limited for failing to characterize dimensions of apathy, such as those involving cognitive, behavioral, and emotional apathy symptoms. This study sought to determine whether factors consistent with these apathy dimensions in PD could be identified on the AS, examine the associations between these factors and disease-related characteristics, and compare PD patients and healthy control (HCs) … Show more

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Cited by 17 publications
(21 citation statements)
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“…The AS is a validated measure for evaluating the severity of apathy in PD (Starkstein et al, 1992). However, apathy is a multidimensional construct, involving cognitive, behavioral, and emotional symptoms, and the AS has been recognized as having limitations in subtyping these dimensions of apathy (Lopez et al, 2019). Toward understanding the mechanisms behind the multidimensional nature of apathy, future rs-fMRI studies should use more refined and comprehensive tools to detect the substructure of apathy, such as the Dimensional Apathy Scale, (Radakovic and Abrahams, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…The AS is a validated measure for evaluating the severity of apathy in PD (Starkstein et al, 1992). However, apathy is a multidimensional construct, involving cognitive, behavioral, and emotional symptoms, and the AS has been recognized as having limitations in subtyping these dimensions of apathy (Lopez et al, 2019). Toward understanding the mechanisms behind the multidimensional nature of apathy, future rs-fMRI studies should use more refined and comprehensive tools to detect the substructure of apathy, such as the Dimensional Apathy Scale, (Radakovic and Abrahams, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…This principal components analysis is largely consistent with previous principal components analysis and factor analytic studies of this measure in PD. 14,16 Together, these components accounted for 46.03% of the variance in the scale (see Supplementary Table S1).…”
Section: Dimensions Of Apathy Symptomsmentioning
confidence: 99%
“…Factor analyses of commonly used measures of apathy in PD have consistently yielded multiple latent factors underlying these measures, providing further empirical support for a multidimensional conceptualization of apathy in PD. [14][15][16] Although hypothesized, to our knowledge, no study to date has demonstrated whether PD patients themselves present with distinct profiles of apathy symptoms, which would enable them to be classified into separable apathy subtypes. 17 As noted above, past studies have focused only on whether items on apathy scales are best explained by one or more multiple latent variables.…”
mentioning
confidence: 99%
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