Qualitative Concept
effectiveness Audio
ef·fec·tive·ness [ ih-fek-tiv-nis, ee-fek? ]
Definitions related to effectiveness:
  • (efficacy) Effectiveness. In medicine, the ability of an intervention (for example, a drug or surgery) to produce the desired beneficial effect.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • (efficacy) The capacity of a drug or treatment to produce beneficial effects on the course or duration of a disease at the dose tested and against the illness (and patient population) for which it is designed.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • (efficacy) The capacity to bring about a desired effect.
    NCI
    U.S. National Cancer Institute, 2021
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