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Pediatric Physical Therapy:
doi: 10.1097/PEP.0000000000000062
Research Article

Measuring Postural Stability in Young Children With Cerebral Palsy: A Comparison of 2 Instruments

Elizabeth Randall, Katharine PT, MScPT, MSc; Bartlett, Doreen J. PT, PhD; McCoy, Sarah Westcott PT, PhD, FAPTA

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Purpose: To compare construct validity, interrater and test-retest reliabilities of the Pediatric Reach Test and the Early Clinical Assessment of Balance (ECAB), and their relationships with the Gross Motor Function Measure, 66-item version, Basal and Ceiling approach (GMFM-66-B&C) to appraise clinical utility of postural stability measures for children with cerebral palsy (CP).

Methods: A total of 28 children with CP, 2 to 7 years old, across all functional ability levels participated in 2 assessments over 2 weeks. Two assessors scored the measures during the first assessment.

Results: Both measures demonstrated construct validity, rs of 0.88 (P < .001). Both measures correlated with GMFM-66-B&C, rs > 0.95. Interrater and test-retest reliabilities were stronger for the ECAB than for the Pediatric Reach Test (intraclass correlation coefficients > 0.98 vs 0.87-0.94). The ECAB demonstrated lower measurement error and proportionately smaller minimal detectable change values.

Conclusion: The ECAB is considered the better measure of postural stability among children with CP.

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins and the Section on Pediatrics of the American Physical Therapy Association.


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