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Eur Spine J. 2012 Jul;21(7):1250-6. doi: 10.1007/s00586-011-2082-1. Epub 2011 Nov 23.

Can we predict response to the McKenzie method in patients with acute low back pain? A secondary analysis of a randomized controlled trial.

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1
Duke University Health System, 3116 N Duke St, Durham, NC, USA. charles.sheets@duke.edu

Abstract

PURPOSE:

To evaluate whether patients' treatment preferences, characteristics, or symptomatic response to assessment moderated the effect of the McKenzie method for acute low back pain (LBP).

METHODS:

This study involved a secondary analysis of a previous RCT on the effect of adding the McKenzie method to the recommended first-line care for patients with acute non-specific LBP. 148 patients were randomized to the First-line Care Group (recommended first-line care alone) or the McKenzie Group (McKenzie method in addition to the first-line care) for a 3-week course of treatment. The primary outcome was pain intensity at 3 weeks. The ability of six patient characteristics to identify those who respond best to McKenzie method was assessed using interaction terms in linear regression models.

RESULTS:

The six investigated potential effect modifiers for response to the McKenzie method did not predict a more favorable response to this treatment. None of the point estimates for effect modification met our pre-specified criterion of clinical importance of a 1 point greater improvement in pain. For five of the six predictors, the 95% CI did not include our criterion for meaningful clinical improvement.

CONCLUSION:

We were unable to find any clinically useful effect modifiers for patients with acute LBP receiving the McKenzie method.

PMID:
22109566
PMCID:
PMC3389098
DOI:
10.1007/s00586-011-2082-1
[Indexed for MEDLINE]
Free PMC Article
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