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Sargent, Barbara PT, PhD, PCS; Fetters, Linda PT, PhD, FAPTA
University of Southern California, Los Angeles, California
The authors declare no conflicts of interest.
“How could I apply this information?”
Challenge has been developed as an adjunct to the Gross Motor Function Measure (GMFM-66) to assess gross motor function in children and youth with cerebral palsy who have limitations in advanced motor skills (Gross Motor Function Classification System, level I). This article provides clinicians with a unique look into the rigorous, multistep process of test development allowing for conversations between clinicians and test developers during this refinement process.
“What should I be mindful about when applying this information?”
Clinicians must be mindful that the time/distance cut-points derived from the performance of children with typical development will be further refined through Rasch scaling with a large multicenter sample of children with cerebral palsy. Therefore, although the test items may remain the same, the cutoff points will likely change after the Rasch scaling.
Barbara Sargent, PT, PhD, PCS
University of Southern California
Los Angeles, California
Linda Fetters, PT, PhD, FAPTA
© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins and the Section on Pediatrics of the American Physical Therapy Association.
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