Practical help for specifying the target difference in sample size calculations for RCTs : The DELTA2 five-stage study, including a workshop
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Cook , J A , Julious , S A , Sones , W , Hampson , L V , Hewitt , C , Berlin , J A , Ashby , D , Emsley , R , Fergusson , D A , Walters , S J , Wilson , E C F , Maclennan , G , Stallard , N , Rothwell , J C , Bland , M , Brown , L , Ramsay , C R , Cook , A , Armstrong , D , Altman , D & Vale , L D 2019 , ' Practical help for specifying the target difference in sample size calculations for RCTs : The DELTA 2 five-stage study, including a workshop ' , Health Technology Assessment , vol. 23 , no. 60 . https://doi.org/10.3310/hta23600
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