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Health Services Research

Responsiveness of the Numeric Pain Rating Scale in Patients with Low Back Pain

Childs, John D. PT, PhD, MBA*; Piva, Sara R. PT, MS; Fritz, Julie M. PT, PhD

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doi: 10.1097/01.brs.0000164099.92112.29
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© 2005 Lippincott Williams & Wilkins, Inc.