Linked Life Data

17460183

Source:http://linkedlifedata.com/resource/pubmed/id/17460183

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2007-4-26
pubmed:abstractText
The definition of the uncertainty of measurement used in the International Vocabulary of Basic and General Terms in Metrology (VIM) is a parameter associated with the result of a measurement, which characterizes the dispersion of the values that could reasonably be attributed to the measurand. Uncertainty of measurement comprises many components. In addition to every parameter, the measurement uncertainty is that a value should be given by all institutions that have been accredited. This value shows reliability of the measurement. GUM, published by NIST, contains uncertainty directions. Eurachem/CITAC Guide CG4 was also published by Eurachem/CITAC Working Group in the year 2000. Both of them offer a mathematical model, for uncertainty can be calculated. There are two types of uncertainty in measurement. Type A is the evaluation of uncertainty through the statistical analysis and type B is the evaluation of uncertainty through other means, for example, certificate reference material. Eurachem Guide uses four types of distribution functions: (1) rectangular distribution that gives limits without specifying a level of confidence (u(x)=a/ radical3) to a certificate; (2) triangular distribution that values near to the same point (u(x)=a/ radical6); (3) normal distribution in which an uncertainty is given in the form of a standard deviation s, a relative standard deviation s/ radicaln, or a coefficient of variance CV% without specifying the distribution (a = certificate value, u = standard uncertainty); and (4) confidence interval.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0077-8923
pubmed:author
pubmed:issnType
Print
pubmed:volume
1100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
223-6
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Evaluation of measurement uncertainty of glucose in clinical chemistry.
pubmed:affiliation
Haseki Education and Research Hospital Biochemistry Laboratory, 34096 Aksaray/Fatih-Istanbul, Turkey. berrin_inal@yahoo.com
pubmed:publicationType
Journal Article