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QUESTION: In patients with benign subacute and chronic low back pain, is injection treatment effective for relieving pain?
Data sources
Studies were identified by searching Medline (1966–96), EMBASE/Excerpta Medica (to 1996), and bibliographies of relevant studies.
Study selection
Studies published as full reports in English, French, German, Dutch, and Nordic languages were selected if they were randomised controlled trials (RCTs) of injection treatment for pain relief in patients who had benign chronic low back pain for ≥1 month.
Data extraction
Data were extracted on study methods, participants, interventions, outcome measures, timing of outcome measures, side effects, and main results. The primary outcome measure was the proportion of patients with pain relief. The quality of study methods was assessed (maximum score, 100 …
Footnotes
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Source of funding: no external funding.
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For correspondence: Dr P Nelemans, Epidemiology, University of Maastricht, Debyeplein 1, Maastricht, 6200 MD, The Netherlands. Fax +31 43 3884128.