Title: Rating scales for dystonia in cerebral palsy: reliability and validity
Authors: Monbaliu, Elegast ×
Ortibus, Els
Roelens, F
Desloovere, Kaat
Declerck, Jan
Prinzie, Peter
De Cock, Paul
Feys, Hilde #
Issue Date: Jan-2010
Publisher: Heinemann William Medical Books
Series Title: Developmental Medicine and Child Neurology vol:52 issue:6 pages:570-575
Abstract: AIM: This study investigated the reliability and validity of the Barry-Albright Dystonia Scale (BADS), the Burke-Fahn-Marsden Movement Scale (BFMMS), and the Unified Dystonia Rating Scale (UDRS) in patients with bilateral dystonic cerebral palsy (CP).

METHOD: Three raters independently scored videotapes of 10 patients (five males, five females; mean age 13 y 3 mo, SD 5 y 2 mo, range 5-22 y). One patient each was classified at levels I-IV in the Gross Motor Function Classification System and six patients were classified at level V. Reliability was measured by (1) intraclass correlation coefficient (ICC) for interrater reliability, (2) standard error of measurement (SEM) and smallest detectable difference (SDD), and (3) Cronbach's alpha for internal consistency. Validity was assessed by Pearson's correlations among the three scales used and by content analysis.

RESULTS: Moderate to good interrater reliability was found for total scores of the three scales (ICC: BADS=0.87; BFMMS=0.86; UDRS=0.79). However, many subitems showed low reliability, in particular for the UDRS. SEM and SDD were respectively 6.36% and 17.72% for the BADS, 9.88% and 27.39% for the BFMMS, and 8.89% and 24.63% for the UDRS. High internal consistency was found. Pearson's correlations were high. Content validity showed insufficient accordance with the new CP definition and classification.

INTERPRETATION: Our results support the internal consistency and concurrent validity of the scales; however, taking into consideration the limitations in reliability, including the large SDD values and the content validity, further research on methods of assessment of dystonia is warranted.
ISSN: 0012-1622
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group for Neuromotor Rehabilitation
Section Child - Miscellaneous (-)
Brain & Metabolism Section (-)
Youth Health (-)
× corresponding author
# (joint) last author

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