| HSC | Hand-Schuller-Christian [syndrome]; Health and Safety Commission; health sciences center; health scr... |
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| ICD | I-cell disease; immune complex disease; implantable cardioverter defibrillator; impulse-control diso... |
| HC | hair cell; hairy cell; handicapped; head circumference; head compression; health care; healthy contr... |
| NAC | N-acetylcysteine; National Asthma Center; National Audiovisual Center; Noise Advisory Council |
| AAN | AIDS-associated nephropathy; alpha-amino nitrogen; American Academy of Neurology; American Academy o... |
| models, statistical | Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc. (12 Dec 1998) |
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| statistical distributions | The complete summaries of the frequencies of the values or categories of a measurement made on a group of items, a population, or other collection of data. The distribution tells either how many or what proportion of the group was found to have each value (or each range of values) out of all the possible values that the quantitative measure can have. (12 Dec 1998) |
| statistical genetics | The study of the applications of principles of statistics to problems in genetics. (05 Mar 2000) |
| statistical model | A formal representation for a class of processes that allows a means of analyzing results from experimental studies, such as the Poisson model or the general linear model; it need not propose a process literally interpretable in the context of the individual case. (05 Mar 2000) |
| statistical significance | Statistical methods allow an estimate to be made of the probability of the observed degree of association between variables, and from this the statistical significance can be expressed, commonly in terms of the P value. (05 Mar 2000) |
| Neyman-Pearson statistical hypothesis | A formal conjecture about the numerical value of a parameter to be tested exclusively in the light of an immediate set of data without attention to prior knowledge or convictions and ignoring other sets of evidence treated in a similar fashion. The answer is a statement not about whether the hypothesis is true but whether it is an acceptable explanation of the data or should be rejected in favour of another hypothesis. (05 Mar 2000) |
| data interpretation, statistical | Application of statistical procedures to analyze specific observed or assumed facts from a particular study. (12 Dec 1998) |
| Diagnostic and Statistical Manual | An American Psychiatric Association publication which classifies mental illnesses.Currently in its fourth edition (DSM-IV) and first published in 1952, the manual provides health practitioners with a comprehensive system for diagnosing mental illnesses based on specific ideational and behavioural symptoms. The DSM approach supplants older, less rigorous methods of diagnosis, and as such represents a major step forward for the field of psychiatry. It consists of five axes covering clinical syndromes, developmental and personality disorders, physical disorders, severity of psychosocial stressors, and global assessment of functioning. It is used primarily in the U.S.; elsewhere, the World Health Organization's International Classification of Diseases is preferred. (05 Mar 2000) |
| factor analysis, statistical | A set of statistical methods for analyzing the correlations among several variables in order to estimate the number of fundamental dimensions that underlie the observed data and to describe and measure those dimensions. It is used frequently in the development of scoring systems for rating scales and questionnaires. (12 Dec 1998) |
| bibliography, national | A bibliography which lists all the books and other publications published, or distributed in significant quantity, in a particular country. Sometimes the term is used with respect to the new publications published within a specific period, and sometimes with respect to all those published within a lengthy period of many years. It is also used to indicate a bibliogrpaphy of publications about a country (whether written by its nationals or not) and those written in the language of the country as well as those published in it. (12 Dec 1998) |
| national academy of sciences | A united states organization of distinguished scientists and engineers established for the purpose of investigating and reporting upon any subject of art or science as requested by any department of government. The national research council organised by nas serves as the principal operating agency to stimulate and support research. (12 Dec 1998) |
| National Cancer Information Service | <address, organisation> National Cancer Institute, cancer Information Service, office of Cancer Communications, Building 31, Room 10A24, 9000 Rockville Pike, Bethesda, MD 20892 (27 Sep 1997) |
| national environmental policy act | A federal law enacted in 1969 that requires all federal agencies to consider and analyse the environmental impacts of any proposed action. NEPA requires an environmental impact statement for major federal actions significantly affecting the quality of the environment. NEPA requires federal agencies to inform and involve the public in the agency's decision making process and to consider the environmental impacts of the agency's decision. (05 Dec 1998) |
| National Formulary | An official compendium formerly issued by the American Pharmaceutical Association but now published by the United States Pharmacopeial Convention for the purpose of providing standards and specifications which can be used to evaluate the quality of pharmaceuticals and therapeutic agents. (05 Mar 2000) |
| national library of medicine | An agency of the national institutes of health concerned with overall planning, promoting, and administering programs pertaining to various aspects of documentation and library services in the field of medicine. (12 Dec 1998) |