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When we search for a MeSH term, the most specific MeSH terms are automatically included in the search. This is known as the extended search or explode of that MeSH term. This additional information and the hierarchical structure (see below) make the MeSH essentially a thesaurus , rather than a plain subject headings list.
The following is a list of the codes for MeSH (Medical Subject Headings), a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences. It is a product of the United States National Library of Medicine (NLM).
The following is a partial list of the "A" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). Codes following these are found at List of MeSH codes (A02). For other MeSH codes, see List of MeSH codes. Authoritative sources for this content are the MeSH Browser [1] and MeSH SPARQL ...
Controlled vocabulary terms can accurately describe what a given document is actually about, even if the terms themselves do not occur within the document's text. Well known subject heading systems include the Library of Congress system, Medical Subject Headings (MeSH) created by the United States National Library of Medicine, and Sears.
In clinical trials, an event or outcome that can be measured objectively to determine whether the intervention being studied is beneficial. The endpoints of a clinical trial are usually included in the study objectives. Some examples of endpoints are survival, improvements in quality of life, relief of symptoms, and disappearance of the tumor ...
The following is a list of "M" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). This list continues the information at List of MeSH codes (L01). Codes following these are found at List of MeSH codes (N01). For other MeSH codes, see List of MeSH codes.
It is important to note the difference between geriatrics, the care of aged people, and gerontology, which is the study of the aging process itself. The term geriatrics comes from the Greek γέρων geron meaning "old man", and ιατρός iatros meaning "healer". However, geriatrics is sometimes called medical gerontology.
A 1982 study by Ralph Katz and Thomas J. Allen provides empirical evidence for the "not invented here" syndrome, showing that the performance of R&D project groups declines after about five years, which they attribute to the groups becoming increasingly insular and communicating less with key information sources outside the group.