Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle.
The term âfutilityâ is used to refer to the inability of a clinical trial to achieve its objectives. In particular, stopping a clinical trial when the interim results suggest that it is unlikely to achieve statistical significance can save resources that could be used on more promising research.
1 Positive trial -- The clinical trial shows that the new treatment has a large beneficial effect and is superior to standard treatment. 2  Non-inferior trial -- The clinical trial shows that that the new treatment is equivalent to standard treatment.3  Also called a non-inferiority trial.efinition of Clinical trials. Clinical trials: Trials to evaluate the effectiveness and safety of medications or medical devices by monitoring their effects on large groups of people.