HL7 Terminology
2.0.0 - Publication
HL7 Terminology
2.0.0 - Publication
This page is part of the HL7 Terminology (v2.0.0: Release) based on FHIR R4. The current version which supercedes this version is 5.2.0. For a full list of available versions, see the Directory of published versions 
@prefix fhir: <http://hl7.org/fhir/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
# - resource -------------------------------------------------------------------
a fhir:CodeSystem;
fhir:nodeRole fhir:treeRoot;
fhir:Resource.id [ fhir:value "observation-statistics"];
fhir:Resource.meta [
fhir:Meta.lastUpdated [ fhir:value "2020-04-10T07:10:28.568+10:00"^^xsd:dateTime ]
];
fhir:DomainResource.text [
fhir:Narrative.status [ fhir:value "generated" ];
fhir:Narrative.div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>This code system http://terminology.hl7.org/CodeSystem/observation-statistics defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">average<a name=\"observation-statistics-average\"> </a></td><td>Average</td><td>The [mean](https://en.wikipedia.org/wiki/Arithmetic_mean) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">maximum<a name=\"observation-statistics-maximum\"> </a></td><td>Maximum</td><td>The [maximum](https://en.wikipedia.org/wiki/Maximal_element) value of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">minimum<a name=\"observation-statistics-minimum\"> </a></td><td>Minimum</td><td>The [minimum](https://en.wikipedia.org/wiki/Minimal_element) value of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">count<a name=\"observation-statistics-count\"> </a></td><td>Count</td><td>The [number] of valid measurements over the stated period that contributed to the other statistical outputs.</td></tr><tr><td style=\"white-space:nowrap\">total-count<a name=\"observation-statistics-total-count\"> </a></td><td>Total Count</td><td>The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values.</td></tr><tr><td style=\"white-space:nowrap\">median<a name=\"observation-statistics-median\"> </a></td><td>Median</td><td>The [median](https://en.wikipedia.org/wiki/Median) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">std-dev<a name=\"observation-statistics-std-dev\"> </a></td><td>Standard Deviation</td><td>The [standard deviation](https://en.wikipedia.org/wiki/Standard_deviation) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">sum<a name=\"observation-statistics-sum\"> </a></td><td>Sum</td><td>The [sum](https://en.wikipedia.org/wiki/Summation) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">variance<a name=\"observation-statistics-variance\"> </a></td><td>Variance</td><td>The [variance](https://en.wikipedia.org/wiki/Variance) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">20-percent<a name=\"observation-statistics-20-percent\"> </a></td><td>20th Percentile</td><td>The 20th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">80-percent<a name=\"observation-statistics-80-percent\"> </a></td><td>80th Percentile</td><td>The 80th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">4-lower<a name=\"observation-statistics-4-lower\"> </a></td><td>Lower Quartile</td><td>The lower [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">4-upper<a name=\"observation-statistics-4-upper\"> </a></td><td>Upper Quartile</td><td>The upper [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period.</td></tr><tr><td style=\"white-space:nowrap\">4-dev<a name=\"observation-statistics-4-dev\"> </a></td><td>Quartile Deviation</td><td>The difference between the upper and lower [Quartiles](https://en.wikipedia.org/wiki/Quartile) is called the Interquartile range. (IQR = Q3-Q1) Quartile deviation or Semi-interquartile range is one-half the difference between the first and the third quartiles.</td></tr><tr><td style=\"white-space:nowrap\">5-1<a name=\"observation-statistics-5-1\"> </a></td><td>1st Quintile</td><td>The lowest of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population.</td></tr><tr><td style=\"white-space:nowrap\">5-2<a name=\"observation-statistics-5-2\"> </a></td><td>2nd Quintile</td><td>The second of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population.</td></tr><tr><td style=\"white-space:nowrap\">5-3<a name=\"observation-statistics-5-3\"> </a></td><td>3rd Quintile</td><td>The third of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population.</td></tr><tr><td style=\"white-space:nowrap\">5-4<a name=\"observation-statistics-5-4\"> </a></td><td>4th Quintile</td><td>The fourth of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population.</td></tr><tr><td style=\"white-space:nowrap\">skew<a name=\"observation-statistics-skew\"> </a></td><td>Skew</td><td>Skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive or negative, or even undefined. Source: [Wikipedia](https://en.wikipedia.org/wiki/Skewness).</td></tr><tr><td style=\"white-space:nowrap\">kurtosis<a name=\"observation-statistics-kurtosis\"> </a></td><td>Kurtosis</td><td>Kurtosis is a measure of the "tailedness" of the probability distribution of a real-valued random variable. Source: [Wikipedia](https://en.wikipedia.org/wiki/Kurtosis).</td></tr><tr><td style=\"white-space:nowrap\">regression<a name=\"observation-statistics-regression\"> </a></td><td>Regression</td><td>Linear regression is an approach for modeling two-dimensional sample points with one independent variable and one dependent variable (conventionally, the x and y coordinates in a Cartesian coordinate system) and finds a linear function (a non-vertical straight line) that, as accurately as possible, predicts the dependent variable values as a function of the independent variables. Source: [Wikipedia](https://en.wikipedia.org/wiki/Simple_linear_regression) This Statistic code will return both a gradient and an intercept value.</td></tr></table></div>"
];
fhir:CodeSystem.url [ fhir:value "http://terminology.hl7.org/CodeSystem/observation-statistics"];
fhir:CodeSystem.identifier [
fhir:index 0;
fhir:Identifier.system [ fhir:value "urn:ietf:rfc:3986" ];
fhir:Identifier.value [ fhir:value "urn:oid:2.16.840.1.113883.4.642.1.1126" ]
];
fhir:CodeSystem.version [ fhir:value "0.1.0"];
fhir:CodeSystem.name [ fhir:value "StatisticsCode"];
fhir:CodeSystem.title [ fhir:value "StatisticsCode"];
fhir:CodeSystem.status [ fhir:value "draft"];
fhir:CodeSystem.experimental [ fhir:value "false"^^xsd:boolean];
fhir:CodeSystem.date [ fhir:value "2020-04-09T21:10:28+00:00"^^xsd:dateTime];
fhir:CodeSystem.publisher [ fhir:value "HL7 (FHIR Project)"];
fhir:CodeSystem.contact [
fhir:index 0;
fhir:ContactDetail.telecom [
fhir:index 0;
fhir:ContactPoint.system [ fhir:value "url" ];
fhir:ContactPoint.value [ fhir:value "http://hl7.org/fhir" ] ], [
fhir:index 1;
fhir:ContactPoint.system [ fhir:value "email" ];
fhir:ContactPoint.value [ fhir:value "fhir@lists.hl7.org" ] ]
];
fhir:CodeSystem.description [ fhir:value "The statistical operation parameter -\"statistic\" codes."];
fhir:CodeSystem.caseSensitive [ fhir:value "true"^^xsd:boolean];
fhir:CodeSystem.valueSet [
fhir:value "http://terminology.hl7.org/ValueSet/observation-statistics";
fhir:link <http://terminology.hl7.org/ValueSet/observation-statistics>
];
fhir:CodeSystem.content [ fhir:value "complete"];
fhir:CodeSystem.concept [
fhir:index 0;
fhir:CodeSystem.concept.code [ fhir:value "average" ];
fhir:CodeSystem.concept.display [ fhir:value "Average" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [mean](https://en.wikipedia.org/wiki/Arithmetic_mean) of N measurements over the stated period." ]
], [
fhir:index 1;
fhir:CodeSystem.concept.code [ fhir:value "maximum" ];
fhir:CodeSystem.concept.display [ fhir:value "Maximum" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [maximum](https://en.wikipedia.org/wiki/Maximal_element) value of N measurements over the stated period." ]
], [
fhir:index 2;
fhir:CodeSystem.concept.code [ fhir:value "minimum" ];
fhir:CodeSystem.concept.display [ fhir:value "Minimum" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [minimum](https://en.wikipedia.org/wiki/Minimal_element) value of N measurements over the stated period." ]
], [
fhir:index 3;
fhir:CodeSystem.concept.code [ fhir:value "count" ];
fhir:CodeSystem.concept.display [ fhir:value "Count" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [number] of valid measurements over the stated period that contributed to the other statistical outputs." ]
], [
fhir:index 4;
fhir:CodeSystem.concept.code [ fhir:value "total-count" ];
fhir:CodeSystem.concept.display [ fhir:value "Total Count" ];
fhir:CodeSystem.concept.definition [ fhir:value "The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values." ]
], [
fhir:index 5;
fhir:CodeSystem.concept.code [ fhir:value "median" ];
fhir:CodeSystem.concept.display [ fhir:value "Median" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [median](https://en.wikipedia.org/wiki/Median) of N measurements over the stated period." ]
], [
fhir:index 6;
fhir:CodeSystem.concept.code [ fhir:value "std-dev" ];
fhir:CodeSystem.concept.display [ fhir:value "Standard Deviation" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [standard deviation](https://en.wikipedia.org/wiki/Standard_deviation) of N measurements over the stated period." ]
], [
fhir:index 7;
fhir:CodeSystem.concept.code [ fhir:value "sum" ];
fhir:CodeSystem.concept.display [ fhir:value "Sum" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [sum](https://en.wikipedia.org/wiki/Summation) of N measurements over the stated period." ]
], [
fhir:index 8;
fhir:CodeSystem.concept.code [ fhir:value "variance" ];
fhir:CodeSystem.concept.display [ fhir:value "Variance" ];
fhir:CodeSystem.concept.definition [ fhir:value "The [variance](https://en.wikipedia.org/wiki/Variance) of N measurements over the stated period." ]
], [
fhir:index 9;
fhir:CodeSystem.concept.code [ fhir:value "20-percent" ];
fhir:CodeSystem.concept.display [ fhir:value "20th Percentile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The 20th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." ]
], [
fhir:index 10;
fhir:CodeSystem.concept.code [ fhir:value "80-percent" ];
fhir:CodeSystem.concept.display [ fhir:value "80th Percentile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The 80th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." ]
], [
fhir:index 11;
fhir:CodeSystem.concept.code [ fhir:value "4-lower" ];
fhir:CodeSystem.concept.display [ fhir:value "Lower Quartile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The lower [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." ]
], [
fhir:index 12;
fhir:CodeSystem.concept.code [ fhir:value "4-upper" ];
fhir:CodeSystem.concept.display [ fhir:value "Upper Quartile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The upper [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." ]
], [
fhir:index 13;
fhir:CodeSystem.concept.code [ fhir:value "4-dev" ];
fhir:CodeSystem.concept.display [ fhir:value "Quartile Deviation" ];
fhir:CodeSystem.concept.definition [ fhir:value "The difference between the upper and lower [Quartiles](https://en.wikipedia.org/wiki/Quartile) is called the Interquartile range. (IQR = Q3-Q1) Quartile deviation or Semi-interquartile range is one-half the difference between the first and the third quartiles." ]
], [
fhir:index 14;
fhir:CodeSystem.concept.code [ fhir:value "5-1" ];
fhir:CodeSystem.concept.display [ fhir:value "1st Quintile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The lowest of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population." ]
], [
fhir:index 15;
fhir:CodeSystem.concept.code [ fhir:value "5-2" ];
fhir:CodeSystem.concept.display [ fhir:value "2nd Quintile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The second of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population." ]
], [
fhir:index 16;
fhir:CodeSystem.concept.code [ fhir:value "5-3" ];
fhir:CodeSystem.concept.display [ fhir:value "3rd Quintile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The third of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population." ]
], [
fhir:index 17;
fhir:CodeSystem.concept.code [ fhir:value "5-4" ];
fhir:CodeSystem.concept.display [ fhir:value "4th Quintile" ];
fhir:CodeSystem.concept.definition [ fhir:value "The fourth of four values that divide the N measurements into a frequency distribution of five classes with each containing one fifth of the total population." ]
], [
fhir:index 18;
fhir:CodeSystem.concept.code [ fhir:value "skew" ];
fhir:CodeSystem.concept.display [ fhir:value "Skew" ];
fhir:CodeSystem.concept.definition [ fhir:value "Skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive or negative, or even undefined. Source: [Wikipedia](https://en.wikipedia.org/wiki/Skewness)." ]
], [
fhir:index 19;
fhir:CodeSystem.concept.code [ fhir:value "kurtosis" ];
fhir:CodeSystem.concept.display [ fhir:value "Kurtosis" ];
fhir:CodeSystem.concept.definition [ fhir:value "Kurtosis is a measure of the \"tailedness\" of the probability distribution of a real-valued random variable. Source: [Wikipedia](https://en.wikipedia.org/wiki/Kurtosis)." ]
], [
fhir:index 20;
fhir:CodeSystem.concept.code [ fhir:value "regression" ];
fhir:CodeSystem.concept.display [ fhir:value "Regression" ];
fhir:CodeSystem.concept.definition [ fhir:value "Linear regression is an approach for modeling two-dimensional sample points with one independent variable and one dependent variable (conventionally, the x and y coordinates in a Cartesian coordinate system) and finds a linear function (a non-vertical straight line) that, as accurately as possible, predicts the dependent variable values as a function of the independent variables. Source: [Wikipedia](https://en.wikipedia.org/wiki/Simple_linear_regression) This Statistic code will return both a gradient and an intercept value." ]
].
# - ontology header ------------------------------------------------------------
a owl:Ontology;
owl:imports fhir:fhir.ttl.
IG © 2020+ HL7 International - Vocabulary Work Group. Package hl7.terminology#2.0.0 based on FHIR 4.0.1. Generated 2020-11-07
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