Reliability of the Burke‐Fahn‐Marsden scale in a multicenter trial for dystonia
Identifieur interne : 001904 ( Istex/Curation ); précédent : 001903; suivant : 001905Reliability of the Burke‐Fahn‐Marsden scale in a multicenter trial for dystonia
Auteurs : Pierre Krystkowiak [France] ; Sophie Tezenas Du Montcel [France] ; Laurent Vercueil [France] ; Jean-Luc Houeto [France] ; Christelle Lagrange [France] ; Philippe Cornu [France] ; Serge Blond [France] ; Alim-Louis Benabid [France] ; Pierre Pollak [France] ; Marie Vidailhet [France]Source :
- Movement Disorders [ 0885-3185 ] ; 2007-04-15.
English descriptors
Abstract
Background: The multicenter SPIDY trial (pallidal stimulation for generalized, idiopathic dystonia) recently reported a marked improvement in dystonia which was assessed by the Burke‐Fahn‐Marsden (BFM) scale. However, the reliability of this tool has rarely been evaluated and its use in a multicenter study has never been assessed prospectively. Purpose: To evaluate the concordance between three unblinded clinical raters and one single‐blinded rater for 10 prospective series of ratings on the BFM scale in 22 dystonic patients of the SPIDY study. Methods: Ten assessments on the BFM scale were performed under various stimulation conditions at different time points (before surgery and 1, 3, 6, and 12 months afterwards). Patients were first evaluated by three unblinded clinical raters (one per center). All assessments were videotaped and sent to a blinded rater. Intra‐ and inter‐rater reliability was assessed using intraclass correlation coefficients. Results: The intra‐rater reliability at inclusion was better for the blinded rater than for the clinical raters. The inter‐rater reliability (comparing the blinded rater with each clinical rater) was “very good” at inclusion, “fair” at month 1 and was “good” at month 3, month 6, and month 12. Conclusion: Blinding (rather than video) is probably the key factor in better intra‐rater reliability and can produce more accurate rating than clinical rating. Consequently, a blind procedure should be performed systematically in multicenter studies. As inter‐rater reliability is good in trained unblinded raters, the BFM scale may also be used in the follow up of dystonic patients in movement disorders centers, in clinical practice. © 2007 Movement Disorder Society
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DOI: 10.1002/mds.21392
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Neurology, Saint Antoine University Medical Center, Paris</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INSERM U679, Salpêtrière Hospital, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U679, Salpêtrière Hospital, Paris</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:8E10EEFE43DB5A966127E058F40921329C1F2774</idno><date when="2007" year="2007">2007</date><idno type="doi">10.1002/mds.21392</idno><idno type="url">https://api.istex.fr/document/8E10EEFE43DB5A966127E058F40921329C1F2774/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001904</idno><idno type="wicri:Area/Istex/Curation">001904</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Reliability of the Burke‐Fahn‐Marsden scale in a multicenter trial for dystonia</title><author><name sortKey="Krystkowiak, Pierre" sort="Krystkowiak, Pierre" uniqKey="Krystkowiak P" first="Pierre" last="Krystkowiak">Pierre Krystkowiak</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurology and Movement Disorders, Lille University Medical Center, Lille, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurology and Movement Disorders, Lille University Medical Center, Lille</wicri:regionArea></affiliation></author><author><name sortKey="Du Montcel, Sophie Tezenas" sort="Du Montcel, Sophie Tezenas" uniqKey="Du Montcel S" first="Sophie Tezenas" last="Du Montcel">Sophie Tezenas Du Montcel</name><affiliation wicri:level="1"><mods:affiliation>AP‐HP, Pitié‐Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie‐Paris 6 University, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>AP‐HP, Pitié‐Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie‐Paris 6 University, Paris</wicri:regionArea></affiliation></author><author><name sortKey="Vercueil, Laurent" sort="Vercueil, Laurent" uniqKey="Vercueil L" first="Laurent" last="Vercueil">Laurent Vercueil</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurology, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurology, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INSERM U338, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U338, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation></author><author><name sortKey="Houeto, Jean Uc" sort="Houeto, Jean Uc" uniqKey="Houeto J" first="Jean-Luc" last="Houeto">Jean-Luc Houeto</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurology, Poitiers University Medical Center, Poitiers, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurology, Poitiers University Medical Center, Poitiers</wicri:regionArea></affiliation></author><author><name sortKey="Lagrange, Christelle" sort="Lagrange, Christelle" uniqKey="Lagrange C" first="Christelle" last="Lagrange">Christelle Lagrange</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurology, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurology, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INSERM U338, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U338, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation></author><author><name sortKey="Cornu, Philippe" sort="Cornu, Philippe" uniqKey="Cornu P" first="Philippe" last="Cornu">Philippe Cornu</name><affiliation wicri:level="1"><mods:affiliation>AP‐HP, Department of Neurosurgery, Pitié‐Salpêtrière Hospital Group, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>AP‐HP, Department of Neurosurgery, Pitié‐Salpêtrière Hospital Group, Paris</wicri:regionArea></affiliation></author><author><name sortKey="Blond, Serge" sort="Blond, Serge" uniqKey="Blond S" first="Serge" last="Blond">Serge Blond</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurosurgery, Lille University Medical Center, Lille, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurosurgery, Lille University Medical Center, Lille</wicri:regionArea></affiliation></author><author><name sortKey="Benabid, Alim Ouis" sort="Benabid, Alim Ouis" uniqKey="Benabid A" first="Alim-Louis" last="Benabid">Alim-Louis Benabid</name><affiliation wicri:level="1"><mods:affiliation>INSERM U338, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U338, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Neurosurgery, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurosurgery, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation></author><author><name sortKey="Pollak, Pierre" sort="Pollak, Pierre" uniqKey="Pollak P" first="Pierre" last="Pollak">Pierre Pollak</name><affiliation wicri:level="1"><mods:affiliation>Department of Neurology, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Neurology, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INSERM U338, Grenoble University Medical Center, Grenoble, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U338, Grenoble University Medical Center, Grenoble</wicri:regionArea></affiliation></author><author><name sortKey="Vidailhet, Marie" sort="Vidailhet, Marie" uniqKey="Vidailhet M" first="Marie" last="Vidailhet">Marie Vidailhet</name><affiliation wicri:level="1"><mods:affiliation>AP‐HP, Department of Neurology, Saint Antoine University Medical Center, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>AP‐HP, Department of Neurology, Saint Antoine University Medical Center, Paris</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>INSERM U679, Salpêtrière Hospital, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM U679, Salpêtrière Hospital, Paris</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2007-04-15">2007-04-15</date><biblScope unit="vol">22</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="685">685</biblScope><biblScope unit="page" to="689">689</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">8E10EEFE43DB5A966127E058F40921329C1F2774</idno><idno type="DOI">10.1002/mds.21392</idno><idno type="ArticleID">MDS21392</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Burke‐Fahn‐Marsden scale</term><term>deep bain stimulation</term><term>dystonia</term><term>globus pallidus</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Background: The multicenter SPIDY trial (pallidal stimulation for generalized, idiopathic dystonia) recently reported a marked improvement in dystonia which was assessed by the Burke‐Fahn‐Marsden (BFM) scale. However, the reliability of this tool has rarely been evaluated and its use in a multicenter study has never been assessed prospectively. Purpose: To evaluate the concordance between three unblinded clinical raters and one single‐blinded rater for 10 prospective series of ratings on the BFM scale in 22 dystonic patients of the SPIDY study. Methods: Ten assessments on the BFM scale were performed under various stimulation conditions at different time points (before surgery and 1, 3, 6, and 12 months afterwards). Patients were first evaluated by three unblinded clinical raters (one per center). All assessments were videotaped and sent to a blinded rater. Intra‐ and inter‐rater reliability was assessed using intraclass correlation coefficients. Results: The intra‐rater reliability at inclusion was better for the blinded rater than for the clinical raters. The inter‐rater reliability (comparing the blinded rater with each clinical rater) was “very good” at inclusion, “fair” at month 1 and was “good” at month 3, month 6, and month 12. Conclusion: Blinding (rather than video) is probably the key factor in better intra‐rater reliability and can produce more accurate rating than clinical rating. Consequently, a blind procedure should be performed systematically in multicenter studies. As inter‐rater reliability is good in trained unblinded raters, the BFM scale may also be used in the follow up of dystonic patients in movement disorders centers, in clinical practice. © 2007 Movement Disorder Society</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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