NCIt related terms : Nonrandomized; Non-Randomized; Nonrandomized Trial;
NCIt definition : A clinical trial in which participants may choose or be assigned into groups by researchers.
Their assignment is not random.;
Alternative definition : NCI-GLOSS: A clinical trial in which the participants are not assigned by chance to
different treatment groups. Participants may choose which group they want to be in,
or they may be assigned to the groups by the researchers.; CDISC: Participants are expressly assigned to intervention groups through a non-random
method. (clinicaltrials.gov);