Examination of the Lille Apathy Rating Scale in Parkinson Disease
Identifieur interne : 000412 ( Pmc/Checkpoint ); précédent : 000411; suivant : 000413Examination of the Lille Apathy Rating Scale in Parkinson Disease
Auteurs : Laura B. Zahodne [États-Unis] ; Shamar Young [États-Unis] ; Lindsey Kirsch-Darrow [États-Unis] ; Anne Nisenzon [États-Unis] ; Hubert H. Fernandez [États-Unis] ; Michael S. Okun [États-Unis] ; Dawn Bowers [États-Unis]Source :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2009.
Abstract
Apathy is a unique, multidimensional syndrome commonly encountered in patients with Parkinson disease (PD). Recently, the Lille Apathy Rating Scale (LARS), a semistructured interview yielding a global score, and composite subscores for different domains of apathy (i.e., cognitive, behavioral, affective, self awareness), was developed and given to a sample of patients with PD in France. This study is the first outside of its original developers to examine the English language version of the LARS in PD. We found the LARS to be a coherent instrument demonstrating both convergent and divergent validity, as compared to the Apathy Scale (AS) and Beck Depression Inventory (BDI-II). Using a receiver operating characteristic (ROC) analysis comparing the LARS to the AS, a validated and widely-used measure, we identified a cut-off score (sensitivity = 64%, specificity = 92%, PPV = 88%, NPV = 75%) that was higher than that proposed by the original authors, who derived their cutoff by comparing LARS global scores to clinical judgments of apathy. Although the present study does not compare the LARS to a diagnostic gold standard or promote its utility for diagnosing apathy, it provides further support for the LARS as a promising instrument to examine apathy in PD.
Url:
DOI: 10.1002/mds.22441
PubMed: 19133658
PubMed Central: 3045860
Affiliations:
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<front><div type="abstract" xml:lang="en"><p id="P1">Apathy is a unique, multidimensional syndrome commonly encountered in patients with Parkinson disease (PD). Recently, the Lille Apathy Rating Scale (LARS), a semistructured interview yielding a global score, and composite subscores for different domains of apathy (i.e., cognitive, behavioral, affective, self awareness), was developed and given to a sample of patients with PD in France. This study is the first outside of its original developers to examine the English language version of the LARS in PD. We found the LARS to be a coherent instrument demonstrating both convergent and divergent validity, as compared to the Apathy Scale (AS) and Beck Depression Inventory (BDI-II). Using a receiver operating characteristic (ROC) analysis comparing the LARS to the AS, a validated and widely-used measure, we identified a cut-off score (sensitivity = 64%, specificity = 92%, PPV = 88%, NPV = 75%) that was higher than that proposed by the original authors, who derived their cutoff by comparing LARS global scores to clinical judgments of apathy. Although the present study does not compare the LARS to a diagnostic gold standard or promote its utility for diagnosing apathy, it provides further support for the LARS as a promising instrument to examine apathy in PD.</p>
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College of Medicine, University of Florida, Gainesville, Florida, USA</aff>
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Department of Neurology, McKnight Brain Institute, University of Florida, Gainesville, Florida, USA</aff>
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Correspondence to: Laura B. Zahodne, Department of Clinical & Health Psychology, University of Florida, PO Box 100165, Gaines-ville, FL 32610-0165. <email>lzahodne@phhp.ufl.edu</email>
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<abstract><p id="P1">Apathy is a unique, multidimensional syndrome commonly encountered in patients with Parkinson disease (PD). Recently, the Lille Apathy Rating Scale (LARS), a semistructured interview yielding a global score, and composite subscores for different domains of apathy (i.e., cognitive, behavioral, affective, self awareness), was developed and given to a sample of patients with PD in France. This study is the first outside of its original developers to examine the English language version of the LARS in PD. We found the LARS to be a coherent instrument demonstrating both convergent and divergent validity, as compared to the Apathy Scale (AS) and Beck Depression Inventory (BDI-II). Using a receiver operating characteristic (ROC) analysis comparing the LARS to the AS, a validated and widely-used measure, we identified a cut-off score (sensitivity = 64%, specificity = 92%, PPV = 88%, NPV = 75%) that was higher than that proposed by the original authors, who derived their cutoff by comparing LARS global scores to clinical judgments of apathy. Although the present study does not compare the LARS to a diagnostic gold standard or promote its utility for diagnosing apathy, it provides further support for the LARS as a promising instrument to examine apathy in PD.</p>
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