2023
DOI: 10.1186/s40814-023-01384-1
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Sample size determination for external pilot cluster randomised trials with binary feasibility outcomes: a tutorial

K. Hemming,
M. Taljaard,
E. Gkini
et al.

Abstract: Justifying sample size for a pilot trial is a reporting requirement, but few pilot trials report a clear rationale for their chosen sample size. Unlike full-scale trials, pilot trials should not be designed to test effectiveness, and so, conventional sample size justification approaches do not apply. Rather, pilot trials typically specify a range of primary and secondary feasibility objectives. Often, these objectives relate to estimation of parameters that inform the sample size justification for the full-sca… Show more

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