Journal of manipulative and physiological therapeutics
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J Manipulative Physiol Ther · Sep 2005
Multicenter Study Clinical TrialThe Nordic back pain subpopulation program: the long-term outcome pattern in patients with low back pain treated by chiropractors in Sweden.
(1) To describe the low back pain (LBP) pattern at baseline; (2) to describe the long-term outcome pattern; (3) to investigate the presence of distinct subgroups in relation to outcome; (4) to establish whether short-term outcome is a predictor of long-term outcome. ⋯ Knowledge of specific subgroups may improve the quality of care and the selection of homogeneous study populations in clinical trials.