TY - JOUR T1 - Practical help for specifying the target difference in sample size calculations for RCTs : the DELTA2 five-stage study, including a workshop JO - Health Technology Assessment UR - http://eprints.whiterose.ac.uk/152823/ PY - 2019/10/01 AU - Cook JA AU - Julious SA AU - Sones W AU - Hampson LV AU - Hewitt C AU - Berlin JA AU - Ashby D AU - Emsley R AU - Fergusson DA AU - Walters SJ AU - Wilson ECF et al ED - DO - DOI: 10.3310/hta23600 PB - National Institute for Health Research VL - 23 IS - 60 SP - 1 EP - 88 Y2 - 2025/04/10 ER -