効こう験けん

noun

efficacy; effectiveness

Refers to the beneficial result or power of something, such as a medicine, treatment, or method. Somewhat formal and often used in written contexts.

• この薬くすりの効こう験けんは臨りん床しょう試し験けんで証しょう明めいされた。

  The efficacy of this medicine was proven in clinical trials.

• 新あたらしい治ち療りょう法ほうの効こう験けんが期き待たいされている。

  The effectiveness of the new treatment is anticipated.