Group sequential designs in pragmatic trials : feasibility and assessment of utility using data from a number of recent surgical RCTs
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Parsons , N R , Stallard , N , Parsons , H , Haque , A , Underwood , M , Mason , J , Khan , I , Costa , M L , Griffin , D R , Griffin , J , Beard , D J , Cook , J A , Davies , L , Hudson , J & Metcalfe , A 2022 , ' Group sequential designs in pragmatic trials : feasibility and assessment of utility using data from a number of recent surgical RCTs ' , BMC Medical Research Methodology , vol. 22 , no. 1 , 256 . https://doi.org/10.1186/s12874-022-01734-2
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