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We have developed a simple procedure for assigning persistent low back pain patients to one of four mutually exclusive, hierarchically organized classes. The procedure relies on the spatial distribution of a patient's pain and the results of straight leg raise tests to make the assignment. We have applied the procedure to a large group of patients who sought treatment for persistent LBP at several...
The relationships between psychological distress, pain duration, neuroticism, extraversion, pain severity, and functional impairment were examined in a large group of patients with persistent complaints of low back pain. We evaluated patients on a host of relevant variables before treatment and at 1 year and 2 years after treatment which permitted assessment of the stability of the relationships over...
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