Choosing the target difference ('effect size') for a randomised controlled trial - DELTA(2) guidance protocol. by Cook, JA, Julious, SA, Sones, W, Rothwell, JC, Ramsay, CR, Hampson, LV, Emsley, R, Walters, SJ, Hewitt, C, Bland, M, Fergusson, DA, Berlin, JA, Altman, D, Vale, LD

Adaptive designs in clinical trials: why use them, and how to run and report them by Pallmann, P, Bedding, AW, Choodari-Oskooei, B, Dimairo, M, Flight, L, Hampson, LV, Holmes, J, Mander, AP, Odondi, L, Sydes, MR, Villar, SS, Wason, JMS, Weir, CJ, Wheeler, GM, Yap, C, Jaki, T

Practical help for specifying the target difference in sample size calculations for RCTs: the DELTA2 five-stage study, including a workshop by Cook, JA, Julious, SA, Sones, W, Hampson, LV, Hewitt, C, Berlin, JA, Ashby, D, Emsley, R, Fergusson, DA, Walters, SJ, Wilson, ECF, Maclennan, G, Stallard, N, Rothwell, JC, Bland, M, Brown, L, Ramsay, CR, Cook, A, Armstrong, D, Altman, D, Vale, LD

DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial by Cook, J, Julious, SA, Sones, WR, Hampson, LV, Hewitt, C, Berlin, JA, Ashby, D, Emsley, R, Fergusson, DA, Walters, SJ, Wilson, ECF, Maclennan, G, Stallard, N, Rothwell, JC, Bland, M, Brown, L, Ramsay, CR, Cook, A, Armstrong, D, Altman, D, Vale, LD