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Chapter 55 - Motor and Functional Scales for Movement Disorders

from Section 5: - Objectifying Movement Disorders

Published online by Cambridge University Press:  07 January 2025

By
Carmen Rodríguez-Blázquez  and
Mónica M. Kurtis
Edited by
Erik Ch. Wolters  and
Christian R. Baumann
Erik Ch. Wolters
Affiliation:
Universität Zürich
Christian R. Baumann
Affiliation:
Universität Zürich
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Summary

Measurement is an essential activity in neurology, as it allows for collecting and sharing data that can be used for description, comparison and decision making regarding the health status of patients. The adequate assessment of motor and functional signs and symptoms of movement disorders must be done with instruments that have been developed and tested following a standardized methodology. The validation of a scale or instrument is an iterative process that includes several phases and the testing of a number of psychometric properties following the principles of the Classical Test Theory or the Latent Test Theory, each with its own methods and statistical procedures. In this chapter, we review the characteristics and psychometric properties of the main measurement instruments and scales for assessing motor and functional symptoms in movement disorders, particularly those recommended by the Movement Disorders Society.

Keywords

validationrating scalesClassical Test Theorypsychometricsmovement disordersmotor symptomsfunctioning
Type
Chapter
Information
International Compendium of Movement Disorders , pp. 687 - 698
Publisher: Cambridge University Press
Print publication year: 2025

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