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Efficacy is the ability to produce a desired amount of a desired effect.
Explanation
Medical In a medical context it indicates that the therapeutic effect of a given intervention (e.g. intake of a medicine, an operation, or a public health measure) is acceptable. 'Acceptable' in that context refers to a consensus that it is at least as good as other available interventions to which it will have ideally been compared to in a clinical trial. For example, an efficacious vaccine has the ability to prevent or cure a specific illness in an acceptable proportion of exposed individuals. In strict epidemiological language, 'efficacy' refers to the impact of an intervention in a clinical trial, differing from 'effectiveness' which refers to the impact in real world situations. A therapeutic effect is a consequence of a medical treatment, of any kind, the results of which are judged to be desirable and beneficial. ...
In health care, including medicine, a clinical trial (synonyms: clinical studies, research protocols, medical research) is a process in which a medicine or other medical treatment is tested for its safety and effectiveness, often in comparison to existing treatments. ...
A vaccine is an antigenic preparation used to establish immunity to a disease. ...
Cure can be: successful treatment of disease preserve (meat, for example), as by salting, smoking, or aging (see curing) prepare, preserve, or finish (a substance) by a chemical or physical process (one example is the curing, or seasoning, of a cast iron pan; another is the curing of an adhesive...
Illness (sometimes referred to as ill-health) can be defined as a state of poor health. ...
The concept of 'self-efficacy' is an important one in the self-management of chronic diseases because doctors and patients often do not follow best practice in using a treatment. For instance, a patient using combined oral contraceptive pills to prevent pregnancy may sometimes forget to take a pill at the prescribed time; thus, while the perfect-use failure rate for this form of contraception in the first year of use is just 0.3%, the typical-use failure rate is 8%.[1] In medicine, a chronic disease is a disease that is long-lasting or recurrent. ...
Best Practice is a management idea which asserts that there is a technique, method, process, activity, incentive or reward that is more effective at delivering a particular outcome than any other technique, method, process, etc. ...
The Pill redirects here. ...
Pharmacology In Pharmacology, efficacy refers to the ability of a drug to induce a biological response in its molecular target. This must be distinguished from the affinity, which refers to the ability of the drug to bind to its molecular. In chemistry and biochemistry, a dissociation constant or an ionization constant is a specific type of equilibrium constant used for reversible reactions or processes. ...
The term is often used to classify the activity of a drug upon binding to its receptor.
- agonist: affinity and maximum efficacy
- antagonist : affinity without efficacy
- partial agonist: affinity and partial efficacy
Agonists An agonist is a substance that binds to a receptor and triggers a response in the cell. ...
An ...
Lighting In lighting design, "efficacy" refers to the amount of light (luminous flux) produced by a lamp (a light bulb or other light source), usually measured in lumens, as a ratio of the amount of energy consumed to produce it, usually measured in watts. This is not to be confused with efficiency which is always a dimensionless ratio of output divided by input which for lighting relates to the watts of visible energy as a ratio of the energy consumed in watts. The visible energy can be approximated by the area under the Plancks curve between 300 nm and 700 nm for a blackbody at the temperature of the filament as a ratio of the total energy under the blackbody curve. Efficiency values for light from a heat source are typically less than two percent.
Difference Amplifiers The efficacy of a differential amplifier is measured by the degree of its rejection of common-mode signals inpreference to differential signals. Refer to common-mode rejection ratio (CMRR).
See also Look up Efficacy in Wiktionary, the free dictionary. |
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