question archive The defining features of an RCT Individuals in the treatment group remain in that group irrespective of whether they actually receive the intervention; for example, in a trial of breast cancer screening those randomly allocated to receive screening remain in that group even if they do not attend for treatment - this is called randomisation on an 'intention-to-treat' basis
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The defining features of an RCT
Individuals in the treatment group remain in that group irrespective of whether they actually receive the intervention; for example, in a trial of breast cancer screening those randomly allocated to receive screening remain in that group even if they do not attend for treatment - this is called randomisation on an 'intention-to-treat' basis.