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A New Scale to Evaluate Motor Function in Rett Syndrome: Validation and Psychometric Properties
Marina Luisa Rodocanachi Roidi1, Ioannis Ugo Isaias2, Francesca Cozzi1
1IRCCS Fondazione Don Carlo Gnocchi, Milano, Italy.
Pediatric Neurology
|May 4, 2019
Summary
The Rett Syndrome Motor Evaluation Scale is a new, validated tool for assessing motor function in Rett syndrome. It demonstrates reliability and can aid in clinical practice for evaluating loco-motor abilities.
Area of Science:
- Neurology
- Clinical Assessment
- Psychometrics
Background:
- Rett syndrome is a rare neurodevelopmental disorder affecting motor function.
- Assessing loco-motor abilities is crucial for managing Rett syndrome.
- A validated scale for motor function assessment was needed.
Purpose of the Study:
- To describe and psychometrically validate the Rett Syndrome Motor Evaluation Scale.
- To assess its reliability and validity in patients with Rett syndrome.
- To provide normative data for clinical use.
Main Methods:
- Development and validation of a 25-item ordinal scale.
- Standardization sample of 60 female patients with Rett syndrome.
- Confirmatory factor analysis and reliability testing (internal consistency, inter-rater agreement).
Main Results:
- The scale's multidimensional structure was confirmed.
- Strong internal consistency and excellent inter-rater reliability were found.
- Scores correlated with disease severity, spasticity, and hand dysfunction, but not age.
Conclusions:
- The Rett Syndrome Motor Evaluation Scale is a valid and reliable tool.
- It can be implemented in clinical practice for assessing motor function in Rett syndrome.
- Identified three distinct classes of motor impairment based on the scale.
Keywords:
Confirmatory factor analysisLatent class analysisMotor functionReliabilityRett syndromeValidityMore Related Videos
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