Pediatric Physical Therapy

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Pediatric Physical Therapy:
doi: 10.1097/PEP.0b013e31804a5786
Research Report

Concurrent Validity of the Early Intervention Developmental Profile and the Peabody Developmental Motor Scale-2

Maring, Joyce R. PT, EdD; Elbaum, Leonard PT, EdD

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Abstract

Purpose: The purpose of this study was to determine the concurrent validity of the Early Intervention Developmental Profile (EIDP) and the Peabody Developmental Motor Scale-2 (PDMS-2) in examining gross motor delay.

Methods: Thirty children with a variety of developmental delays attending an early intervention program were administered both the PDMS-2 and the EIDP as part of their developmental evaluations.

Results: The PDMS-2 and EIDP were strongly correlated (r = 0.91, p < 0.01) but the mean age equivalent scores were significantly different. Age equivalent scores were on average 26% higher on the EIDP.

Conclusions: Differences in age equivalent scores between tests may affect a child’s eligibility for services in some states. This study supports the use of norm-based tests when determining a percentage of delay relative to the norm. Developmental tests should not be the sole determinant of the clinical decision making processes.

© 2007 Lippincott Williams & Wilkins, Inc.

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