unit of allocation

Related concept: effect size The effect on the subjects’ health status or well-being attributable only to a treatment or intervention. Note: Investigators seek to estimate the true effect of a treatment or intervention by calculating the difference between the outcome obtained in the experimental group and the control group.

a unit may also be a hospital or community. In other trials, different parts of a person (such as the left or right eye) may be assigned to receive different interventions.»

devices equipment and supplies