= N of 1 trial
{wiki=N_of_1_trial}
An N of 1 trial is a type of experimental design used in clinical research, particularly in the fields of medicine and psychology, where a single patient (the "N" refers to the number of participants in the trial) is studied over time to evaluate the effects of a treatment or intervention. In these trials, the individual serves as their own control, allowing researchers to assess the efficacy and safety of a treatment on that specific person.
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