If the results of the drug intervention show the treatment group recovered faster than the control group, we might, therefore, erroneously conclude that the new COVID-19 treatment was effective.

Patients were assigned to short-term radiotherapy followed by chemotherapy (TNT group) or long-term concurrent chemoradiotherapy (CRT group). The protocol design, random assignment, MRI, study quality ...

The trial used a multicenter, longitudinal, randomized controlled design with three groups (MBCR, SET, and a minimal-treatment control group; 2:2:1 allocation ratio); assessments occurred at baseline ...

With random assignment to treatment and control conditions, we can reasonable assume that over many replications, ... but that of receiving the treatment. With non-random assignment, it may be true ...

Clustered treatment assignment occurs when individuals are grouped into clusters prior to treatment and whole clusters, not individuals, are assigned to treatment or control. In randomized trials, ...

If the results of the drug intervention show the treatment group recovered faster than the control group, we might, therefore, erroneously conclude that the new COVID-19 treatment was effective.