@article{article, title = {{Choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial - the development of the DELTA2 guidance.}}, url = {{http://eprints.whiterose.ac.uk/137235/ }}, year = {{2018}}, month = {{10}}, author = {{Sones W and Julious SA and Rothwell JC and Ramsay CR and Hampson LV and Emsley R and Walters SJ and Hewitt C and Bland M and Fergusson DA and Berlin JA et al}}, doi = {{10.1186/s13063-018-2887-x}}, volume = {{19}}, journal = {{Trials}}, issue = {{542}}, note = {{Accessed on 2025/07/15}}}