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Fair
tests of treatments in health care
Why
fair tests are needed
Why
comparisons must address genuine uncertainties
Differences
between the people compared
Differences
in the way treatment outcomes are assessed
Differences
between intended treatments and treatments actually received
Taking account of the play of chance
Dealing
with biased reporting of the available evidence
Avoiding
biased selection from the available evidence
Reducing
the play of chance using meta-analysis
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