Prospective registration and reporting of trial number in randomised clinical trials: global cross sectional study of the adoption of ICMJE and Declaration of Helsinki recommendations.
Mustafa Al-DurraRobert P NolanEmily SetoJoseph A CafazzoPublished in: BMJ (Clinical research ed.) (2020)
This study found a high compliance in reporting of the TRN for trial papers published in ICMJE member journals, but prospective trial registration was low.