A Study of the Natural History of Back Pain: Part IDevelopment of a Reliable and Sensitive Measure of Disability in Low-Back Pain

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One of the problems in mounting a trial of treatment of back pain is the lack of suitable outcome measures. This paper describes the development and validation of a questionnaire designed to measure selfrated disability due to back pain. The questionnaire is short, simple, sensitive, and reliable. It would be suitable for use in future trials of treatment.

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