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Subgroup and sensitivity analyses
Subgroup
Used where it is suspected in advance that certain features may alter the effect of an intervention
• participants (e.g. severity of condition)
• interventions (e.g. intensity, dose, duration, type of intervention)
• outcomes (e.g. timing of follow‐up)
Sensitivity
Does result change according to small variations in the data and methods?
• inclusion/exclusion of trials (e.g. risk of bias)
• inclusion/exclusion of dubious data
• choice of treatment effects or method for pooling
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PRECONGRESS COURSE 13 I BARCELONA, SPAIN – 1 JULY 2018 47
