“…The majority of studies (52.3%) failed to report results for everyone who entered into the trial, 57,[115][116][117][118][119]122,124,[129][130][131][132][133]135,[137][138][139][140][141][143][144][145]150,152,154,156,159,162,164,[166][167][168]176,178,180,183,185,[187][188][189][190][196][197][198][199] while in 24 studies (27.3%), it was unclear whether results accounted for all participants originally randomised. 107,120,121,134,136,142,148,153,157,158,160,161,165,169-174, 179,186,193-195 Few studies explicitly stated that participants were analysed in the groups that they had been originally allocated to but no study showed clear evidence that this was not done.…”