Specifying the target difference in the primary outcome for a randomised controlled trial : guidance for researchers

Cook, J A, Hislop, J, Altman, D G, Fayers, P, Briggs, A H, Ramsay, C R, Norrie, J D, Harvey, I M, Buckley, B, Fergusson, D, Ford, I, Vale, L D & DELTA group 2015, 'Specifying the target difference in the primary outcome for a randomised controlled trial : guidance for researchers', Trials, vol. 16, 12. https://doi.org/10.1186/s13063-014-0526-8