MRCT – A study that is set up so that the study treatment each participant receives is not known by the participants but is known by the researchers.
https://mrctcenter.org/glossaryterm/single-blind-study/
CDISC-Gloss – A study in which one party, either the investigator or the subject, does not know which medication or placebo is administered to the subject; also called single-masked study. See also blind study, double-blind study, triple-blind study.