This article is about use in pharmacology, medicine and Christian theology. For electrical engineering, see Luminous efficacy. For business, see Individual Voluntary Arrangement.
Not to be confused with Efficiency.
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Look up efficacy in Wiktionary, the free dictionary.
Efficacy is the ability to perform a task to a satisfactory or expected degree. The word comes from the same roots as effectiveness, and it has often been used synonymously, although in pharmacology a distinction is now often made between efficacy and effectiveness.[1]
The word efficacy is used in pharmacology and medicine to refer both to the maximum response achievable from a pharmaceutical drug in research settings,[2] and to the capacity for sufficient therapeutic effect or beneficial change in clinical settings.
^Zimmer, Carl (20 November 2020). "2 Companies Say Their Vaccines Are 95% Effective. What Does That Mean? You might assume that 95 out of every 100 people vaccinated will be protected from Covid-19. But that's not how the math works". The New York Times. Retrieved 21 November 2020.
^Cite error: The named reference HolfordSheiner was invoked but never defined (see the help page).
Look up efficacy in Wiktionary, the free dictionary. Efficacy is the ability to perform a task to a satisfactory or expected degree. The word comes from...
Vaccine efficacy or vaccine effectiveness is the percentage reduction of disease cases in a vaccinated group of people compared to an unvaccinated group...
Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt...
The efficacy of prayer has been studied since at least 1872, generally through experiments to determine whether prayer or intercessory prayer has a measurable...
In political science, political efficacy is the citizens' trust in their ability to change the government and belief that they can understand and influence...
In the sociology of crime, the term collective efficacy refers to the ability of members of a community to control the behavior of individuals and groups...
the placebo effect may account for most or all of the drugs' observed efficacy. Research on the effectiveness of antidepressants is generally done on...
The FDA animal efficacy rule (also known as animal rule) applies to development and testing of drugs and biologicals to reduce or prevent serious or life-threatening...
psychotherapy. The efficacy of hypnotherapy is not well supported by scientific evidence, and, due to the lack of evidence indicating any level of efficacy, it is...
Glycemic efficacy refers to the capacity of regulated glycemic levels to produce an effect in people with diabetes and heart disease. According to Zeev...
Intrinsic activity (IA) and efficacy refer to the relative ability of a drug-receptor complex to produce a maximum functional response. This must be distinguished...
There is an overall absence of sound statistical evidence of therapeutic efficacy, which is consistent with the lack of any biologically plausible pharmacological...
outdated. The Glaser article incorrectly conflates the efficacy of treatment centers with the efficacy of Alcoholics Anonymous. The Glaser article says that...
If a pest has resistance then that will reduce the pesticide's efficacy – efficacy and resistance are inversely related. Cases of resistance have been...
experiments using wide-ranging doses of the study agent to obtain preliminary efficacy, toxicity and pharmacokinetic information. Such tests assist the developer...
is converted into visible light; the rest is lost as heat. The luminous efficacy of a typical incandescent bulb for 120 V operation is 16 lumens per watt...
Fexofenadine at doses above 120 mg a day does not appear to provide additional efficacy in the treatment of allergic rhinitis. The most common side effects include...
out of self-efficacy theory (SET). Bandura proposed self-efficacy construct in 1977, in connection to social cognitive theory. Self-efficacy refers to a...
norclozapine) also bind and activate a given receptor, but have only partial efficacy at the receptor relative to a full agonist, even at maximal receptor occupancy...
response efficacy, or an individual's expectation that carrying out the recommended action will remove the threat, and perceived self efficacy, or the...
five of these trials were used to assess the efficacy of tirzepatide. The five trials used in the efficacy evaluation included 6,263 adult participants...
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