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Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

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Psychometric Properties of the Pediatric Balance Scale Using Rasch Analysis.

Nancy Darr¹, Mary Rose Franjoine, Suzann K Campbell

¹School of Physical Therapy (Dr Darr), Belmont University, Nashville, Tennessee; Department of Physical Therapy (Dr Franjoine), Daemen College, Amherst, New York; and Department of Physical Therapy (Dr Campbell), and Department of Educational Psychology (Dr Smith), University of Illinois at Chicago.

Pediatric Physical Therapy : the Official Publication of the Section on Pediatrics of the American Physical Therapy Association

|September 24, 2015

Summary

The Pediatric Balance Scale (PBS) is a valid measure of functional balance in children. Rasch analysis indicates it is best suited for preschool-aged children, with potential for revision to improve utility in older age groups.

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Area of Science:

Pediatric physical therapy
Motor control and development
Psychometrics and measurement

Background:

The Pediatric Balance Scale (PBS) is a widely used tool to assess functional balance in children.
Understanding the psychometric properties of the PBS is crucial for accurate interpretation of results.

Purpose of the Study:

To examine the dimensionality, rating scale function, and hierarchical properties of the Pediatric Balance Scale (PBS) using Rasch analysis.
To evaluate the suitability of the PBS for different age groups and identify areas for potential revision.

Main Methods:

Retrospective analysis of PBS data from 823 children aged 2 to 13 years.
Application of unidimensional and multidimensional Rasch partial credit models.
Evaluation of model fit using Bayesian information criterion and assessment of internal consistency (Cronbach's alpha).

Main Results:

The PBS demonstrated the best fit to a unidimensional model.
High internal consistency (Cronbach's alpha = 0.94) and strong correlations between proposed dimensions were observed.
A ceiling effect was noted, suggesting the easiest items may not adequately assess balance in older children or those with balance dysfunction.

Conclusions:

The Pediatric Balance Scale (PBS) is a unidimensional measure with high internal consistency.
The PBS is best targeted towards preschool-aged children.
Revisions to the PBS may enhance its utility for assessing balance in older children and those with balance impairments.