TY - JOUR T1 - Choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial - the development of the DELTA2 guidance. JO - Trials UR - http://eprints.whiterose.ac.uk/137235/ PY - 2018/10/10 AU - Sones W AU - Julious SA AU - Rothwell JC AU - Ramsay CR AU - Hampson LV AU - Emsley R AU - Walters SJ AU - Hewitt C AU - Bland M AU - Fergusson DA AU - Berlin JA et al ED - DO - DOI: 10.1186/s13063-018-2887-x VL - 19 IS - 542 Y2 - 2024/12/22 ER -