Research article
Estimating the number needed to treat from continuous outcomes in randomised controlled trials: methodological challenges and worked example using data from the UK Back Pain Exercise and Manipulation (BEAM) trial
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* Corresponding author: Robert Froud r.j.froud@qmul.ac.uk
BMC Medical Research Methodology 2009, 9:35 doi:10.1186/1471-2288-9-35
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