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the power to bring about planned or wanted results
- Researchers are conducting clinical trials to further evaluate the efficacy of the new vaccine.
- Questions remain about the true efficacy of the advertising campaign due to the lack of metrics collected.
- The study tested the efficacy of the new medication in treating the disease.
- They were impressed by the efficacy of the training program in improving employee skills.
- The efficacy of the new policy will be assessed after a few months of implementation.
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