@article{article, title  = {{DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial}},

 publisher = {{BMC}},

 url = {{https://eprints.whiterose.ac.uk/id/eprint/138617 https://doi.org/10.1186/s13063-018-2884-0 }},

 year = {{2018}},

 month = {{11}},

 author = {{Cook JA and Julious SA and Sones W and Hampson LV and Hewitt C and Berlin JA and Ashby D and Emsley R and Fergusson DA and Walters SJ and Wilson ECF et al}},

 doi = {{10.1186/s13063-018-2884-0}},

 volume = {{19}},

 journal = {{Trials}},

 note = {{Accessed on 2025/10/31}}}