efficacy

3 definitions • 5 examples

the ability of something to produce the intended result:

The study is a serious attempt to understand the efficacy of cash incentives as a way of promoting learning.

how well a particular treatment or drug works under carefully controlled scientific testing conditions:

The clinical report shows results of almost 95% efficacy for the vaccine.

efficacy of Of course, the efficacy of any drug in a study will be different from its actual performance in the population.

efficacy trial Efficacy trials determine whether an intervention produces the expected result under ideal circumstances.

the quality of being effective; effectiveness:

The drug's efficacy has been questioned by consumer advocates.