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Invited Commentary

WF Boyce, MSc, PT, is Assistant Professor, School of Rehabilitation Therapy and the Departments of Paediatrics and Community Health and Epidemiology, Queen's University, Kingston, Ontario, Canada K7L 3N6 (boycew@post.queensu.ca)

This excerpt was created in the absence of an abstract.

The desire to create and validate an instrument that can be used with confidence to conclusively demonstrate the effectiveness of treatment in infants receiving physical therapy is a laudable goal. Palisano et al have shown the merit of a sequential, step-by-step process in establishing the measurement properties of the Peabody Developmental Gross Motor Scale (PDMS-GM) for this purpose. They describe a detailed study in which they answer key questions for evaluative measures: Does the measure show changes in group scores over time? Do most infants show changes in their individual scores? Is the measure responsive to clinically important differences in gross motor skills, and can data from the study be used for sample-size calculations in clinical trials? This article, however, should be making only tentative conclusions for a variety of methodological reasons.

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Related Articles

Validity of the Peabody Developmental Gross Motor Scale as an Evaluative Measure of Infants Receiving Physical Therapy

Robert J Palisano, Thubi H Kolobe, Stephen M Haley, Linda Pax Lowes, and Sandra L Jones
Physical Therapy 1995 75: 939-948. [Abstract] [PDF]