Efficacy

How well a study treatment works in the study.

How to say: Efficacy

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An example of efficacy is how well a vaccine prevents infection.

USE IN A SENTENCE

A study might compare the efficacy of two different treatments.

MORE INFO

Efficacy is not the same as effectiveness. Efficacy is how well a study treatment works in the study. Effectiveness is how well the treatment works in the real world after the study ends.

WORDS RELATED TO EFFICACY

clinical benefit

effectiveness

WORDS OPPOSITE TO EFFICACY

OTHER RESOURCES

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