AI Article Synopsis
- The Dyskinesia Impairment Scale (DIS) was developed to assess dystonia and choreoathetosis specifically in children and youth with dyskinetic cerebral palsy, unlike the existing Burke-Fahn-Marsden Dystonia Rating Scale (BFM) that's mainly used for inherited dystonia.
- The study evaluated the reliability and validity of the DIS through various statistical methods, showing high inter-rater and test-retest reliability with notable correlation to the BFM scale.
- Results indicated that the DIS is a reliable and valid tool for assessing dystonia and choreoathetosis in its target population, making it a promising option for clinical use.
Article Abstract
Background: The Dyskinesia Impairment Scale (DIS) is a new assessment scale for dystonia and choreoathetosis in children and youth with dyskinetic cerebral palsy. Today, the Burke-Fahn-Marsden Dystonia Rating Scale (BFM) is mostly used to assess dystonia in children with inherited dystonia. The aim of this study was to assess reliability and validity of the DIS in children and youth with inherited or idiopathic dystonia.
Methods: Reliability was measured by (1) the intraclass correlation coefficients (ICCs) for inter-rater and test-retest reliability, as well as (2) standard error of measurement (SEM) and minimal detectable difference (MDD). For concurrent validity of the DIS-dystonia subscale, the BFM was administered.
Results: In total, 11 males and 9 females (median age 16 years and 7 months, range 6 to 24 years) were included. For inter-rater reliability, the ICCs for the DIS total score and the dystonia and choreoathetosis subscale scores were 0.83, 0.87, and 0.71, respectively. For test-retest reliability, the ICCs for the DIS total score and the dystonia and choreoathetosis subscale scores were 0.95, 0.88, and 0.93, respectively. The SEM and MDD for the total DIS were 3.98% and 11.04%, respectively. The Spearman correlation coefficient between the dystonia subscale and the BFM was 0.88 ( < 0.01).
Conclusions: Good to excellent inter-rater, test-retest reliability, and validity were found for the total DIS and the dystonia subscale. The choreoathetosis subscale showed moderate inter-rater reliability and excellent test-retest reliability. The DIS may be a promising tool to assess dystonia and choreoathetosis in children and young adults with inherited or idiopathic dystonia.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7463647 | PMC |
| http://dx.doi.org/10.3390/jcm9082597 | DOI Listing |
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