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Exclusion criteria
Exclusion criteria A list of criteria, any one of which excludes a potential subject from participation in a study. See also inclusion criteria, admission criteria.
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Admission
Entry. As a patient admission (into a hospital). The opposite of admission in this context is discharge.
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Exclamation point hair
Exclamation point hair is a key diagnostic finding in a disorder called alopecia areata. Alopecia areata is patchy baldness (alopecia means baldness and areata means occurring in patches) which typically begins with patchy hair loss on the scalp and sometimes progresses to complete baldness and even loss of body hair. The hair loss tends to be rather rapid and asymmetrical and is different than male pattern baldness.Alopecia areata affects both males and females. It tends to occur most often in children and young adults but older individuals can also be affected.The most common pattern of alopecia areata is one or more spots of hair loss on the scalp. There is also a form with more generalized thinning. When all of the scalp hair is lost, it is called alopecia totalis. Loss of all of the hairs on the body is called alopecia universalis.
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Endpoint
An indicator measured in a subject or biological sample to assess the safety, efficacy, or other objective of a trial. See also surrogate marker.
Equipoise
A state in which an investigator is uncertain about which arm of a clinical trial would be therapeutically superior for a patient. An investigator who has a treatment preference or finds out that one arm of a comparative trial offers a clinically therapeutic advantage should disclose this information to subjects participating in the trial. Ethically, subjects should only be entered or continue in a trial where equipoise exists for that subject.
Equivalence trial
A trial with the primary objective of showing that the response to two or more treatments differs by an amount which is clinically unimportant. This is usually demonstrated by showing that the true treatment difference is likely to lie between a lower and an upper equivalence level of clinically acceptable differences.
Ethics approval
The affirmation decision of the ethics committee that the clinical trial has been independently reviewed and may be conducted at the institution site within the constraints set forth by the IRB, the institution, good clinical practice (GCP), and the applicable regulatory requirements.
Ethics committee (EC)
an independent body (a review board or a committee, institutional, regional, national, or supranational) constituted of medical/scientific professionals and non-scientific members, whose responsibility it is to ensure the protection of the rights, safety, and well-being of human subjects involved in a trial and to provide public assurance of that protection by, among other things, reviewing and approving/providing favourable opinion on, the trial protocol, the suitability of the investigator(s), facilities, and the methods and material to be used in obtaining and documenting informed consent of the trial subjects. The legal status, composition, function, operations, and regulatory requirements pertaining to independent ethics committees may differ among countries, but should allow the independent ethics committee to act in agreement with GCP as described in the ICH guideline. See also institutional review board.
Exclusion criteria
External consistency
The consistency of a procedure (for example, a rating scale or laboratory test) between sets of data.
Epithelial
Of the cells that line the internal and external surfaces of the body.
Ed.D.
Doctor of Education.
Edema (dropsy)
The presence of excessive watery fluid in intercellular (especially subcutaneous) spaces or in a bodily cavity; the condition characterized by such presence; and/or the swelling that the presence of excessive fluid causes.
Enzyme (natural catalyst)
Any of numerous proteins and protein-nonprotein compounds that living cells produce and that can initiate, or affect the speed of, specific chemical reactions.
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