Letters Patients and trial enrolment decisions

Use of deferred consent for enrolment in trials is fraught with problems

BMJ 2015; 351 doi: https://doi.org/10.1136/bmj.h4609 (Published 01 September 2015) Cite this as: BMJ 2015;351:h4609
  1. Liaquat R Johnson, assistant professor1,
  2. Rangaswamy Siddaiah, associate professor1
  1. 1DM WIMS Medical College, Naseera Nagar, Meppadi PO, Wayanad 673577, Kerala, India
  1. liaquat99{at}gmail.com

“Deferred consent” seems to be an ill disguised instrument to pre-emptively circumvent many trial problems.1 It almost eliminates the possibility of refusal and helps reduce subject bias because participants are unaware of recruitment during the intervention phase. It also reduces the risk of contamination, again because of the participant’s ignorance.

The recurrent theme is that of ignorance about recruitment, which seems …

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