Main
outcomes, for inclusion in the ‘Summary of findings’ table, are those
that are essential for decision making, and should usually have an emphasis
on patient-important outcomes;
Primary
outcomes are the two or three outcomes from among the main outcomes that
the review would be likely to be able to address if sufficient studies
are identified, in order to reach a conclusion about the effects (beneficial
and adverse) of the intervention(s);
Secondary
outcomes include the remaining main outcomes (other than primary outcomes)
plus additional outcomes useful for explaining effects;
Ensure
that outcomes cover potential as well as actual adverse effects;
Consider
outcomes relevant to all potential decision-makers, including economic
data;
Consider
the type and timing of outcome measurements.
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