NPU Concept model - Dynamic NPU Manual

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NPU Concept Model

General rules and principles

System

General rules on System

System Abbreviation Syst Synonym Patient system Definition Part or phenomenon of the perceivable or conceivable world consisting of a demarcated arrangement of a set of elements and a set of relationships or processes between these elements (1) Note: The system can be...

Component

General rules on Component

Component   Synonym Object Definition A part of the system Note: An object that is being or intended to be measured/examined Scope   Generic NPU syntax  NPUxxxxx System(specification)—Component(specification); kind-of-property(specification)= ? unit Specifications  ...

Kind-of-property

Measurement units

General rules on measurement units

General rules on measurement unit Purpose A quantitative estimation of a clinical laboratory analyte must be expressed together with an appropriate unit of measurement. Without units, the result is at best useless, at worst dangerously misleading and a great risk to...

Rules for use of SI-prefixes

Rules for use of SI-prefixes in laboratory medicine Definition SI prefixes are a set of multiples and submulitples within the SI system Purpose of the use of SI-prefixes To prevent communication errors due to several expressions of the same unit To ensure that the...

International System of Units

International System of Units Abbreviation SI units Synonym Metric system of units Definition A set of measurement units defined accordance to the corresponding International System of Quantities (ISQ) Scope The system is founded on 7 base SI units corresponding to...

Non-SI units

Non-SI units Definition Measurement unit that is outside the SI system Note: Non-SI units have magnitudes (values) that do not belong to the 7 physical dimensions or basic kinds-of-quantity  (length, mass, time, temperature, amount-of-substance, electric current and...

Special units

Result type

General rules on result type

General rules on result type Synonyms Value set type, data type, scale of measurement Definition Classification of value sets with one or more common characteristics Scope Value sets with common characteristics can be subjected to mathmatically and statistically...

Differential scale

Differential scale Synonym Interval scale, linear differential scale Definition A scale that contains numbers after subtraction between two values of the same kind. Scope Numbers on a differential scale can be subjected to subtraction and addition, but not division or...

Narrative description

Narrative description   Abbreviation   Synonym   Definition   Scope   Description   Specifications   Reference Ferard, G. a.-A. (2016). Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. Royal Society of...

Nominal description

Nominal description   Abbreviation   Synonym   Definition   Scope   Description   Specifications   Reference Ferard, G. a.-A. (2016). Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. Royal Society of...

Ordinal scale

Ordinal scale   Abbreviation   Synonym   Definition Quantity, defined by a conventional measurement procedure for which a total ordering relation can be established, according to magnitude, with other quantities of the same kind, but for which no algebraic operations...

Ratio scale

Ratio scale   Abbreviation   Synonym Unitary ratio scale Definition Ratio scale (property) has a magnitude and can be divided by another property Scope The value set is a set of numerical values. There is an absolute zero point. Description The numerical values of a...