efficacy
e fi ka see
- n capacity or power to produce a desired effect
concern about the safety and efficacy of the vaccine
- It involves a challenge to the efficacy of Federal Aviation Administration equipment and safety procedures as well as salary, working conditions, rivalry among unions and the .
- But, argue authors John Buell and Etta Kralovec in The End of Homework, "both research and historical experience fail to demonstrate the necessity or efficacy of ever longer hours .
- In the efficacy group, 52% responded to Celexa vs.