Reliability and validity of the scale for the assessment and rating of ataxia: A study in 64 ataxia patients
Identifieur interne : 001F13 ( Istex/Corpus ); précédent : 001F12; suivant : 001F14Reliability and validity of the scale for the assessment and rating of ataxia: A study in 64 ataxia patients
Auteurs : Anja Weyer ; Michael Abele ; Tanja Schmitz-Hübsch ; Beate Schoch ; Markus Frings ; Dagmar Timmann ; Thomas KlockgetherSource :
- Movement Disorders [ 0885-3185 ] ; 2007-08-15.
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- KwdEn :
Abstract
The objective of this study was to test the reliability and validity of the Scale for the Assessment and Rating of Ataxia (SARA) in ataxia patients not suffering from autosomal dominant spinocerebellar ataxia (SCA). To this end, 64 patients with various ataxia disorders or stable cerebellar lesions were rated independently by two investigators. In addition to SARA, the following assessment instruments were applied: ataxia disease stage, Barthel index and part IV (functional assessment) of the Unified Huntington's Disease Rating scale (UHDRS‐IV). Eighteen patients were rated twice. Inter‐rater and intrarater reliability were very high with ICCs of 0.98 and 0.99. Internal consistency was high indicated by Cronbach's α of 0.97. Factorial analysis revealed that the rating results were mainly determined by one major factor with an eigenvalue of 6.34 which explained 52.8% of the variance. SARA score increased with disease stage (P < 0.0001) and was closely correlated with Barthel index (r = −0.63, P < 0.0001) and UHDRS‐IV (r = −0.62, P < 0.0001), but only weakly correlated with disease duration (r = 0.44, P < 0.001). The results suggest that SARA is a reliable and valid measure of ataxia in non‐SCA ataxia patients. © 2007 Movement Disorder Society
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DOI: 10.1002/mds.21544
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<front><div type="abstract" xml:lang="en">The objective of this study was to test the reliability and validity of the Scale for the Assessment and Rating of Ataxia (SARA) in ataxia patients not suffering from autosomal dominant spinocerebellar ataxia (SCA). To this end, 64 patients with various ataxia disorders or stable cerebellar lesions were rated independently by two investigators. In addition to SARA, the following assessment instruments were applied: ataxia disease stage, Barthel index and part IV (functional assessment) of the Unified Huntington's Disease Rating scale (UHDRS‐IV). Eighteen patients were rated twice. Inter‐rater and intrarater reliability were very high with ICCs of 0.98 and 0.99. Internal consistency was high indicated by Cronbach's α of 0.97. Factorial analysis revealed that the rating results were mainly determined by one major factor with an eigenvalue of 6.34 which explained 52.8% of the variance. SARA score increased with disease stage (P < 0.0001) and was closely correlated with Barthel index (r = −0.63, P < 0.0001) and UHDRS‐IV (r = −0.62, P < 0.0001), but only weakly correlated with disease duration (r = 0.44, P < 0.001). The results suggest that SARA is a reliable and valid measure of ataxia in non‐SCA ataxia patients. © 2007 Movement Disorder Society</div>
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<fundingInfo><fundingAgency>European Community (EUROSCA)</fundingAgency>
<fundingNumber>LSHM‐CT‐2004–503304</fundingNumber>
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<fundingInfo><fundingAgency>German Ministry of Education and Research (GeneMove)</fundingAgency>
<fundingNumber>01 GM 0503</fundingNumber>
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<p>The objective of this study was to test the reliability and validity of the Scale for the Assessment and Rating of Ataxia (SARA) in ataxia patients not suffering from autosomal dominant spinocerebellar ataxia (SCA). To this end, 64 patients with various ataxia disorders or stable cerebellar lesions were rated independently by two investigators. In addition to SARA, the following assessment instruments were applied: ataxia disease stage, Barthel index and part IV (functional assessment) of the Unified Huntington's Disease Rating scale (UHDRS‐IV). Eighteen patients were rated twice. Inter‐rater and intrarater reliability were very high with ICCs of 0.98 and 0.99. Internal consistency was high indicated by Cronbach's α of 0.97. Factorial analysis revealed that the rating results were mainly determined by one major factor with an eigenvalue of 6.34 which explained 52.8% of the variance. SARA score increased with disease stage (<i>P</i>
< 0.0001) and was closely correlated with Barthel index (r = −0.63, <i>P</i>
< 0.0001) and UHDRS‐IV (r = −0.62, <i>P</i>
< 0.0001), but only weakly correlated with disease duration (r = 0.44, <i>P</i>
< 0.001). The results suggest that SARA is a reliable and valid measure of ataxia in non‐SCA ataxia patients. © 2007 Movement Disorder Society</p>
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<affiliation>Department of Neurology, University Hospital of Bonn, Bonn, Germany</affiliation>
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<affiliation>Department of Neurology, University Hospital of Bonn, Bonn, Germany</affiliation>
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<affiliation>Department of Neurology, University Hospital of Bonn, Bonn, Germany</affiliation>
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<abstract lang="en">The objective of this study was to test the reliability and validity of the Scale for the Assessment and Rating of Ataxia (SARA) in ataxia patients not suffering from autosomal dominant spinocerebellar ataxia (SCA). To this end, 64 patients with various ataxia disorders or stable cerebellar lesions were rated independently by two investigators. In addition to SARA, the following assessment instruments were applied: ataxia disease stage, Barthel index and part IV (functional assessment) of the Unified Huntington's Disease Rating scale (UHDRS‐IV). Eighteen patients were rated twice. Inter‐rater and intrarater reliability were very high with ICCs of 0.98 and 0.99. Internal consistency was high indicated by Cronbach's α of 0.97. Factorial analysis revealed that the rating results were mainly determined by one major factor with an eigenvalue of 6.34 which explained 52.8% of the variance. SARA score increased with disease stage (P < 0.0001) and was closely correlated with Barthel index (r = −0.63, P < 0.0001) and UHDRS‐IV (r = −0.62, P < 0.0001), but only weakly correlated with disease duration (r = 0.44, P < 0.001). The results suggest that SARA is a reliable and valid measure of ataxia in non‐SCA ataxia patients. © 2007 Movement Disorder Society</abstract>
<note type="funding">European Community (EUROSCA) - No. LSHM‐CT‐2004–503304; </note>
<note type="funding">German Ministry of Education and Research (GeneMove) - No. 01 GM 0503; </note>
<subject lang="en"><genre>Keywords</genre>
<topic>ataxia</topic>
<topic>clinical assessment</topic>
<topic>SARA reliability</topic>
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<relatedItem type="host"><titleInfo><title>Movement Disorders</title>
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<identifier type="ISSN">0885-3185</identifier>
<identifier type="eISSN">1531-8257</identifier>
<identifier type="DOI">10.1002/(ISSN)1531-8257</identifier>
<identifier type="PublisherID">MDS</identifier>
<part><date>2007</date>
<detail type="volume"><caption>vol.</caption>
<number>22</number>
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