Physical therapy
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The purpose of this study was to assess the relationship between the nonorganic signs (Waddell scores) of patients with low back pain, their response to repetitive end-range lumbar spine test movements (centralization of symptoms), and the rate of return to work at a 6-month follow-up. ⋯ A high Waddell score appears to be the best predictor of outcome, as indicated by return to work.