In their paper on the ethics of platform trials, Dal-Ré et al. [1] make two statements about “just-in-time” consent [2] (now more widely known as two-stage consent [3]). First, they claim that “control group participants in studies that employ ‘Just-in-time consent’ … would therefore not know that their assignment was made by a random process”. They go on to state that "Consent to RCTs should fulfil three ethical features: participants must agree to contribute to the trial, this must be known at the time they are recruited, and they must know that they have participated in it.” The authors then allege that “‘Just-in-time consent’ … designs do not fulfil these three features for all participants."
