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Quebec back pain disability scale*

Quebec back pain disability scale*
* Minimum detectable change (90% confidence): 15 points.
Reproduced with permission from: Kopec JA, Esdaile JM, Abrahamowicz M, et al. The Quebec Back Pain Disability Scale: Measurement properties. Spine 1995; 20:341. Copyright © 1995 Lippincott Williams & Wilkins.
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