
1) Ability to work 2) Effectiveness 3) Effectivity 4) Effectuality 5) Effectualness 6) Efficaciousness 7) French word used in English 8) Medical terminology 9) Productiveness
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https://www.crosswordclues.com/clue/efficacy

1) Avail 2) Effect 3) Efficaciousness 4) Efficiency 5) Usefulness 6) Utility 7) Value
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https://www.crosswordclues.com/clue/efficacy

Efficacy is the capacity to produce an effect. It has different specific meanings in different fields. In medicine, it is the ability of an intervention or drug to produce a desired effect. == Context== === Medicine === In medicine, efficacy indicates the capacity for beneficial change (or therapeutic effect) of a given intervention (e.g. a drug, ...
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http://en.wikipedia.org/wiki/Efficacy

• (n.) Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer.
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http://thinkexist.com/dictionary/meaning/efficacy/

(from the article `drug`) ...which is the formation of the drug-receptor complex, and receptor activation, which moderates the effect. The term affinity describes the tendency ...
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http://www.britannica.com/eb/a-z/e/12

Effectiveness. In medicine, the ability of an intervention (for example, a drug or surgery) to produce the desired beneficial effect.
Found on
http://www.cancer.gov/dictionary?expand=E

Efficiency, refers to maximum response a drug can elicit, reflected by Emax
Found on
http://www.cat-world.com.au/glossary

Efficacy describes the relative intensity with which agonists vary in the response they produce even when they occupy the same number of receptors and with the same affinity. Efficacy is not synonymous to Intrinsic activity. Efficacy is the property that enables drugs to produce responses. It is convenient to differentiate the properties of drugs ...
Found on
http://www.chem.qmul.ac.uk/iupac/medchem/ah.html

Efficacy describes the relative intensity with which agonists vary in the response they produce even when they occupy the same number of receptors and with the same affinity. Efficacy is not synonymous to Intrinsic activity. Efficacy is the property that enables drugs to produce responses. It is convenient to differentiate the properties of drugs i...
Found on
http://www.chemistry-dictionary.com/definition/efficacy.php

Strength, effectiveness. The ability of a drug to control or cure an illness. Efficacy should be distinguished from activity (see), which is limited to a drug's immediate effects on the microbe triggering the disease. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973

(ef´ĭ-kә-se) the ability of a drug to achieve the desired effect. Dose-effect curve for two drugs of different efficacy: The efficacy of drug A is greater than that of drug B. the degree to which an intervention accomplishes the desired or projected outcomes.
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http://www.encyclo.co.uk/local/21001

How well something works. This term is used to refer to treatments in particular.
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http://www.encyclo.co.uk/local/21465

effectiveness; the ability to achieve a desired result.
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http://www.encyclo.co.uk/local/22225

Capacity to produce the desired effect.
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http://www.encyclo.co.uk/visitor-contributions.php

Ef'fi·ca·cy noun [ Latin efficacia , from efficax . See Efficacious .] Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer. 'Of noxious
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http://www.encyclo.co.uk/webster/E/11

production of a desired resultÂ
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http://www.graduateshotline.com/list.html

in vaccine research, the ability of a vaccine to produce a desired clinical effect, such as protection against a specific infection, at the optimal dosage and schedule in a given population. A vaccine may be tested for efficacy in Phase 3 trials if it appears to be safe and shows some promise in smaller Phase 1 and 2 trials.
Found on
https://aidsinfo.nih.gov/news/128/hiv-vaccine-glossary

A measure of how well a vaccine works in a defined population in controlled or ideal circumstances — for example, in a randomised controlled trial
Found on
https://immunisationhandbook.health.gov.au/technical-terms
efficaciousness noun capacity or power to produce a desired effect; `concern about the safety and efficacy of the vaccine`
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https://www.encyclo.co.uk/local/20974

The amount of energy service or useful energy delivered per unit of energy input. Often used in reference to lighting systems, where the visible light output of a luminary is relative to power input; expressed in lumens per Watt; the higher the efficacy value, the higher the energy efficiency.
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https://www.encyclo.co.uk/local/22819

capacity for producing a desired result or effect; effectiveness: a remedy of great efficacy.
Found on
https://www.infoplease.com/dictionary/efficacy

in vaccine research, the ability of a vaccine to produce a desired clinical effect, such as protection against a specific infection or disease, at the optimal dosage and schedule in a given population. A vaccine may be tested for efficacy in Phase 3 trials if it appears to be safe and shows some promise in smaller Phase 1 and 2 trials.
Found on
https://www.malariavaccine.org/glossary
[ASVAB glossary] capacity or power to produce a desired effect
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https://www.vocabulary.com/lists/1154621

capacity or power to produce a desired result
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https://www.vocabulary.com/lists/2088994

capacity or power to produce a desired effect
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https://www.vocabulary.com/lists/388513
No exact match found.