MovDisordV3, PascalFrancis, Corpus, bibRecord, 001722

Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia

Identifieur interne : 001722 ( PascalFrancis/Corpus ); précédent : 001721; suivant : 001723

Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia

Auteurs : Pierre Krystkowiak ; Sophie Tezenas Du Montcel ; Laurent Vercueil ; Jean-Luc Houeto ; Christelle Lagrange ; Philippe Cornu ; Serge Blond ; Alim-Louis Benabid ; Pierre Pollak ; Marie Vidailhet

Source :

Movement disorders [ 0885-3185 ] ; 2007.

RBID : Pascal:07-0263035

Descripteurs français

Pascal (Inist)
- Système nerveux pathologie, Dystonie, Fiabilité, Etude multicentrique.

English descriptors

KwdEn :
- Dystonia, Multicenter study, Nervous system diseases, Reliability.

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 video-taped 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.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`01`	`1`		`@1 KRYSTKOWIAK (Pierre)`
A11	`02`	`1`		`@1 TEZENAS DU MONTCEL (Sophie)`
A11	`03`	`1`		`@1 VERCUEIL (Laurent)`
A11	`04`	`1`		`@1 HOUETO (Jean-Luc)`
A11	`05`	`1`		`@1 LAGRANGE (Christelle)`
A11	`06`	`1`		`@1 CORNU (Philippe)`
A11	`07`	`1`		`@1 BLOND (Serge)`
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A14	`02`			`@1 AP-HP, Pitié-Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie-Paris 6 University @2 Paris @3 FRA @Z 2 aut.`
A14	`03`			`@1 Department of Neurology, Grenoble University Medical Center @2 Grenoble @3 FRA @Z 3 aut. @Z 5 aut. @Z 9 aut.`
A14	`04`			`@1 INSERM U338, Grenoble University Medical Center @2 Grenoble @3 FRA @Z 3 aut. @Z 5 aut. @Z 8 aut. @Z 9 aut.`
A14	`05`			`@1 Department of Neurology, Poitiers University Medical Center @2 Poitiers @3 FRA @Z 4 aut.`
A14	`06`			`@1 AP-HP, Department of Neurosurgery, Pitié-Salpêtrière Hospital Group @2 Paris @3 FRA @Z 6 aut.`
A14	`07`			`@1 Department of Neurosurgery, Lille University Medical Center @2 Lille @3 FRA @Z 7 aut.`
A14	`08`			`@1 Department of Neurosurgery, Grenoble University Medical Center @2 Grenoble @3 FRA @Z 8 aut.`
A14	`09`			`@1 AP-HP, Department of Neurology, Saint Antoine University Medical Center @2 Paris @3 FRA @Z 10 aut.`
A14	`10`			`@1 INSERM U679, Salpêtrière Hospital @2 Paris @3 FRA @Z 10 aut.`
A17	`01`	`1`		`@1 The SPIDY Group (French Pallidal Stimulation Group for Dystonia) @3 FRA`
A20				`@1 685-689`
A21				`@1 2007`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 20953 @5 354000149439720130`
A44				`@0 0000 @1 © 2007 INIST-CNRS. All rights reserved.`
A45				`@0 11 ref.`
A47	`01`	`1`		`@0 07-0263035`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Movement disorders`
A66	`01`			`@0 USA`
C01	`01`		`ENG`	@0 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 video-taped 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.
C02	`01`	`X`		`@0 002B17`
C02	`02`	`X`		`@0 002B17H`
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C03	`01`	`X`	`FRE`	`@0 Système nerveux pathologie @5 01`
C03	`01`	`X`	`ENG`	`@0 Nervous system diseases @5 01`
C03	`01`	`X`	`SPA`	`@0 Sistema nervioso patología @5 01`
C03	`02`	`X`	`FRE`	`@0 Dystonie @5 02`
C03	`02`	`X`	`ENG`	`@0 Dystonia @5 02`
C03	`02`	`X`	`SPA`	`@0 Distonía @5 02`
C03	`03`	`X`	`FRE`	`@0 Fiabilité @5 09`
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C03	`04`	`X`	`FRE`	`@0 Etude multicentrique @5 10`
C03	`04`	`X`	`ENG`	`@0 Multicenter study @5 10`
C03	`04`	`X`	`SPA`	`@0 Estudio multicéntrico @5 10`
C07	`01`	`X`	`FRE`	`@0 Extrapyramidal syndrome @5 37`
C07	`01`	`X`	`ENG`	`@0 Extrapyramidal syndrome @5 37`
C07	`01`	`X`	`SPA`	`@0 Extrapiramidal síndrome @5 37`
C07	`02`	`X`	`FRE`	`@0 Mouvement involontaire @5 38`
C07	`02`	`X`	`ENG`	`@0 Involuntary movement @5 38`
C07	`02`	`X`	`SPA`	`@0 Movimiento involuntario @5 38`
C07	`03`	`X`	`FRE`	`@0 Muscle strié pathologie @5 39`
C07	`03`	`X`	`ENG`	`@0 Striated muscle disease @5 39`
C07	`03`	`X`	`SPA`	`@0 Músculo estriado patología @5 39`
C07	`04`	`X`	`FRE`	`@0 Trouble neurologique @5 40`
C07	`04`	`X`	`ENG`	`@0 Neurological disorder @5 40`
C07	`04`	`X`	`SPA`	`@0 Trastorno neurológico @5 40`
C07	`05`	`X`	`FRE`	`@0 Encéphale pathologie @5 41`
C07	`05`	`X`	`ENG`	`@0 Cerebral disorder @5 41`
C07	`05`	`X`	`SPA`	`@0 Encéfalo patología @5 41`
C07	`06`	`X`	`FRE`	`@0 Système nerveux central pathologie @5 42`
C07	`06`	`X`	`ENG`	`@0 Central nervous system disease @5 42`
C07	`06`	`X`	`SPA`	`@0 Sistema nervosio central patología @5 42`
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Format Inist (serveur)

NO :	PASCAL 07-0263035 INIST
ET :	Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia
AU :	KRYSTKOWIAK (Pierre); TEZENAS DU MONTCEL (Sophie); VERCUEIL (Laurent); HOUETO (Jean-Luc); LAGRANGE (Christelle); CORNU (Philippe); BLOND (Serge); BENABID (Alim-Louis); POLLAK (Pierre); VIDAILHET (Marie)
AF :	Department of Neurology and Movement Disorders, Lille University Medical Center/Lille/France (1 aut.); AP-HP, Pitié-Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie-Paris 6 University/Paris/France (2 aut.); Department of Neurology, Grenoble University Medical Center/Grenoble/France (3 aut., 5 aut., 9 aut.); INSERM U338, Grenoble University Medical Center/Grenoble/France (3 aut., 5 aut., 8 aut., 9 aut.); Department of Neurology, Poitiers University Medical Center/Poitiers/France (4 aut.); AP-HP, Department of Neurosurgery, Pitié-Salpêtrière Hospital Group/Paris/France (6 aut.); Department of Neurosurgery, Lille University Medical Center/Lille/France (7 aut.); Department of Neurosurgery, Grenoble University Medical Center/Grenoble/France (8 aut.); AP-HP, Department of Neurology, Saint Antoine University Medical Center/Paris/France (10 aut.); INSERM U679, Salpêtrière Hospital/Paris/France (10 aut.)
DT :	Publication en série; Niveau analytique
SO :	Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 5; Pp. 685-689; Bibl. 11 ref.
LA :	Anglais
EA :	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 video-taped 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.
CC :	002B17; 002B17H; 002B17F
FD :	Système nerveux pathologie; Dystonie; Fiabilité; Etude multicentrique
FG :	Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Encéphale pathologie; Système nerveux central pathologie
ED :	Nervous system diseases; Dystonia; Reliability; Multicenter study
EG :	Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Cerebral disorder; Central nervous system disease
SD :	Sistema nervioso patología; Distonía; Fiabilidad; Estudio multicéntrico
LO :	INIST-20953.354000149439720130
ID :	07-0263035

Links to Exploration step

Pascal:07-0263035

Le document en format XML

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<author><name sortKey="Blond, Serge" sort="Blond, Serge" uniqKey="Blond S" first="Serge" last="Blond">Serge Blond</name>
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<author><name sortKey="Benabid, Alim Louis" sort="Benabid, Alim Louis" uniqKey="Benabid A" first="Alim-Louis" last="Benabid">Alim-Louis Benabid</name>
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<author><name sortKey="Pollak, Pierre" sort="Pollak, Pierre" uniqKey="Pollak P" first="Pierre" last="Pollak">Pierre Pollak</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">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>
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<author><name sortKey="Tezenas Du Montcel, Sophie" sort="Tezenas Du Montcel, Sophie" uniqKey="Tezenas Du Montcel S" first="Sophie" last="Tezenas Du Montcel">Sophie Tezenas Du Montcel</name>
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<author><name sortKey="Vercueil, Laurent" sort="Vercueil, Laurent" uniqKey="Vercueil L" first="Laurent" last="Vercueil">Laurent Vercueil</name>
<affiliation><inist:fA14 i1="03"><s1>Department of Neurology, Grenoble University Medical Center</s1>
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<affiliation><inist:fA14 i1="04"><s1>INSERM U338, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Houeto, Jean Luc" sort="Houeto, Jean Luc" uniqKey="Houeto J" first="Jean-Luc" last="Houeto">Jean-Luc Houeto</name>
<affiliation><inist:fA14 i1="05"><s1>Department of Neurology, Poitiers University Medical Center</s1>
<s2>Poitiers</s2>
<s3>FRA</s3>
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</affiliation>
</author>
<author><name sortKey="Lagrange, Christelle" sort="Lagrange, Christelle" uniqKey="Lagrange C" first="Christelle" last="Lagrange">Christelle Lagrange</name>
<affiliation><inist:fA14 i1="03"><s1>Department of Neurology, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
</affiliation>
<affiliation><inist:fA14 i1="04"><s1>INSERM U338, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Cornu, Philippe" sort="Cornu, Philippe" uniqKey="Cornu P" first="Philippe" last="Cornu">Philippe Cornu</name>
<affiliation><inist:fA14 i1="06"><s1>AP-HP, Department of Neurosurgery, Pitié-Salpêtrière Hospital Group</s1>
<s2>Paris</s2>
<s3>FRA</s3>
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</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Blond, Serge" sort="Blond, Serge" uniqKey="Blond S" first="Serge" last="Blond">Serge Blond</name>
<affiliation><inist:fA14 i1="07"><s1>Department of Neurosurgery, Lille University Medical Center</s1>
<s2>Lille</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Benabid, Alim Louis" sort="Benabid, Alim Louis" uniqKey="Benabid A" first="Alim-Louis" last="Benabid">Alim-Louis Benabid</name>
<affiliation><inist:fA14 i1="04"><s1>INSERM U338, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
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</affiliation>
<affiliation><inist:fA14 i1="08"><s1>Department of Neurosurgery, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>8 aut.</sZ>
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<author><name sortKey="Pollak, Pierre" sort="Pollak, Pierre" uniqKey="Pollak P" first="Pierre" last="Pollak">Pierre Pollak</name>
<affiliation><inist:fA14 i1="03"><s1>Department of Neurology, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
</affiliation>
<affiliation><inist:fA14 i1="04"><s1>INSERM U338, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Vidailhet, Marie" sort="Vidailhet, Marie" uniqKey="Vidailhet M" first="Marie" last="Vidailhet">Marie Vidailhet</name>
<affiliation><inist:fA14 i1="09"><s1>AP-HP, Department of Neurology, Saint Antoine University Medical Center</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</inist:fA14>
</affiliation>
<affiliation><inist:fA14 i1="10"><s1>INSERM U679, Salpêtrière Hospital</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Movement disorders</title>
<title level="j" type="abbreviated">Mov. disord.</title>
<idno type="ISSN">0885-3185</idno>
<imprint><date when="2007">2007</date>
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</series>
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<seriesStmt><title level="j" type="main">Movement disorders</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dystonia</term>
<term>Multicenter study</term>
<term>Nervous system diseases</term>
<term>Reliability</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term>
<term>Dystonie</term>
<term>Fiabilité</term>
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<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 video-taped 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.</div>
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<fA11 i1="02" i2="1"><s1>TEZENAS DU MONTCEL (Sophie)</s1>
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<fA11 i1="03" i2="1"><s1>VERCUEIL (Laurent)</s1>
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<fA11 i1="04" i2="1"><s1>HOUETO (Jean-Luc)</s1>
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<fA11 i1="05" i2="1"><s1>LAGRANGE (Christelle)</s1>
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<fA11 i1="06" i2="1"><s1>CORNU (Philippe)</s1>
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<fA11 i1="07" i2="1"><s1>BLOND (Serge)</s1>
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<fA11 i1="08" i2="1"><s1>BENABID (Alim-Louis)</s1>
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<fA11 i1="09" i2="1"><s1>POLLAK (Pierre)</s1>
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<fA11 i1="10" i2="1"><s1>VIDAILHET (Marie)</s1>
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<fA14 i1="01"><s1>Department of Neurology and Movement Disorders, Lille University Medical Center</s1>
<s2>Lille</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>AP-HP, Pitié-Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie-Paris 6 University</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Department of Neurology, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>9 aut.</sZ>
</fA14>
<fA14 i1="04"><s1>INSERM U338, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</fA14>
<fA14 i1="05"><s1>Department of Neurology, Poitiers University Medical Center</s1>
<s2>Poitiers</s2>
<s3>FRA</s3>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="06"><s1>AP-HP, Department of Neurosurgery, Pitié-Salpêtrière Hospital Group</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="07"><s1>Department of Neurosurgery, Lille University Medical Center</s1>
<s2>Lille</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA14 i1="08"><s1>Department of Neurosurgery, Grenoble University Medical Center</s1>
<s2>Grenoble</s2>
<s3>FRA</s3>
<sZ>8 aut.</sZ>
</fA14>
<fA14 i1="09"><s1>AP-HP, Department of Neurology, Saint Antoine University Medical Center</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</fA14>
<fA14 i1="10"><s1>INSERM U679, Salpêtrière Hospital</s1>
<s2>Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</fA14>
<fA17 i1="01" i2="1"><s1>The SPIDY Group (French Pallidal Stimulation Group for Dystonia)</s1>
<s3>FRA</s3>
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<fC01 i1="01" l="ENG"><s0>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 video-taped 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.</s0>
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<s5>02</s5>
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<s5>09</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Reliability</s0>
<s5>09</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Fiabilidad</s0>
<s5>09</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Etude multicentrique</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Multicenter study</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Estudio multicéntrico</s0>
<s5>10</s5>
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<s5>37</s5>
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<s5>39</s5>
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<s5>39</s5>
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</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Système nerveux central pathologie</s0>
<s5>42</s5>
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<s5>42</s5>
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<server><NO>PASCAL 07-0263035 INIST</NO>
<ET>Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia</ET>
<AU>KRYSTKOWIAK (Pierre); TEZENAS DU MONTCEL (Sophie); VERCUEIL (Laurent); HOUETO (Jean-Luc); LAGRANGE (Christelle); CORNU (Philippe); BLOND (Serge); BENABID (Alim-Louis); POLLAK (Pierre); VIDAILHET (Marie)</AU>
<AF>Department of Neurology and Movement Disorders, Lille University Medical Center/Lille/France (1 aut.); AP-HP, Pitié-Salpêtrière Hospital Group, Biostatistics and Medical Information Unit, Pierre et Marie Curie-Paris 6 University/Paris/France (2 aut.); Department of Neurology, Grenoble University Medical Center/Grenoble/France (3 aut., 5 aut., 9 aut.); INSERM U338, Grenoble University Medical Center/Grenoble/France (3 aut., 5 aut., 8 aut., 9 aut.); Department of Neurology, Poitiers University Medical Center/Poitiers/France (4 aut.); AP-HP, Department of Neurosurgery, Pitié-Salpêtrière Hospital Group/Paris/France (6 aut.); Department of Neurosurgery, Lille University Medical Center/Lille/France (7 aut.); Department of Neurosurgery, Grenoble University Medical Center/Grenoble/France (8 aut.); AP-HP, Department of Neurology, Saint Antoine University Medical Center/Paris/France (10 aut.); INSERM U679, Salpêtrière Hospital/Paris/France (10 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 5; Pp. 685-689; Bibl. 11 ref.</SO>
<LA>Anglais</LA>
<EA>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 video-taped 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.</EA>
<CC>002B17; 002B17H; 002B17F</CC>
<FD>Système nerveux pathologie; Dystonie; Fiabilité; Etude multicentrique</FD>
<FG>Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Encéphale pathologie; Système nerveux central pathologie</FG>
<ED>Nervous system diseases; Dystonia; Reliability; Multicenter study</ED>
<EG>Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Cerebral disorder; Central nervous system disease</EG>
<SD>Sistema nervioso patología; Distonía; Fiabilidad; Estudio multicéntrico</SD>
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<ID>07-0263035</ID>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia

Reliability of the burke-fahn-marsden scale in a multicenter trial for dystonia

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