%0 Journal Article
%T Choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial ¨C the development of the DELTA2 guidance
%A Catherine Hewitt
%A Craig Robert Ramsay
%A Dean A. Fergusson
%A Doug Altman
%A Jesse A. Berlin
%A Joanne C. Rothwell
%A Jonathan Alistair Cook
%A Lisa V. Hampson
%A Luke David Vale
%A Martin Bland
%A Richard Emsley
%A Stephen J. Walters
%A Steven A. Julious
%A William Sones
%J Archive of "Trials".
%D 2018
%R 10.1186/s13063-018-2887-x
%K Target difference
%K Clinically important difference
%K Sample size
%K Guidance
%K Randomised trial
%K Effect size
%K Delphi
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180499/