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Orders and Observations Work Group | Maturity Level: N/A | Standards Status: Informative |
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Definition for Code SystemStatisticsCode
{ "resourceType" : "CodeSystem", "id" : "observation-statistics", "meta" : { "lastUpdated" : "2024-12-03T22:56:58.036+00:00", "profile" : ["http://hl7.org/fhir/StructureDefinition/shareablecodesystem"] }, "text" : { "status" : "generated", "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem observation-statistics</b></p><a name=\"observation-statistics\"> </a><a name=\"hcobservation-statistics\"> </a><a name=\"observation-statistics-en-US\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/observation-statistics</code> 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><div><p>The <a href=\"https://en.wikipedia.org/wiki/Arithmetic_mean\">mean</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">maximum<a name=\"observation-statistics-maximum\"> </a></td><td>Maximum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Maximal_element\">maximum</a> value of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">minimum<a name=\"observation-statistics-minimum\"> </a></td><td>Minimum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Minimal_element\">minimum</a> value of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">count<a name=\"observation-statistics-count\"> </a></td><td>Count</td><td><div><p>The [number] of valid measurements over the stated period that contributed to the other statistical outputs.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">total-count<a name=\"observation-statistics-total-count\"> </a></td><td>Total Count</td><td><div><p>The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">median<a name=\"observation-statistics-median\"> </a></td><td>Median</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Median\">median</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">std-dev<a name=\"observation-statistics-std-dev\"> </a></td><td>Standard Deviation</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Standard_deviation\">standard deviation</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">sum<a name=\"observation-statistics-sum\"> </a></td><td>Sum</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Summation\">sum</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">variance<a name=\"observation-statistics-variance\"> </a></td><td>Variance</td><td><div><p>The <a href=\"https://en.wikipedia.org/wiki/Variance\">variance</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">20-percent<a name=\"observation-statistics-20-percent\"> </a></td><td>20th Percentile</td><td><div><p>The 20th <a href=\"https://en.wikipedia.org/wiki/Percentile\">Percentile</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">80-percent<a name=\"observation-statistics-80-percent\"> </a></td><td>80th Percentile</td><td><div><p>The 80th <a href=\"https://en.wikipedia.org/wiki/Percentile\">Percentile</a> of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">4-lower<a name=\"observation-statistics-4-lower\"> </a></td><td>Lower Quartile</td><td><div><p>The lower <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartile</a> Boundary of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">4-upper<a name=\"observation-statistics-4-upper\"> </a></td><td>Upper Quartile</td><td><div><p>The upper <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartile</a> Boundary of N measurements over the stated period.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">4-dev<a name=\"observation-statistics-4-dev\"> </a></td><td>Quartile Deviation</td><td><div><p>The difference between the upper and lower <a href=\"https://en.wikipedia.org/wiki/Quartile\">Quartiles</a> 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.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">5-1<a name=\"observation-statistics-5-1\"> </a></td><td>1st Quintile</td><td><div><p>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.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">5-2<a name=\"observation-statistics-5-2\"> </a></td><td>2nd Quintile</td><td><div><p>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.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">5-3<a name=\"observation-statistics-5-3\"> </a></td><td>3rd Quintile</td><td><div><p>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.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">5-4<a name=\"observation-statistics-5-4\"> </a></td><td>4th Quintile</td><td><div><p>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.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">skew<a name=\"observation-statistics-skew\"> </a></td><td>Skew</td><td><div><p>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: <a href=\"https://en.wikipedia.org/wiki/Skewness\">Wikipedia</a>.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">kurtosis<a name=\"observation-statistics-kurtosis\"> </a></td><td>Kurtosis</td><td><div><p>Kurtosis is a measure of the "tailedness" of the probability distribution of a real-valued random variable. Source: <a href=\"https://en.wikipedia.org/wiki/Kurtosis\">Wikipedia</a>.</p>\n</div></td></tr><tr><td style=\"white-space:nowrap\">regression<a name=\"observation-statistics-regression\"> </a></td><td>Regression</td><td><div><p>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: <a href=\"https://en.wikipedia.org/wiki/Simple_linear_regression\">Wikipedia</a> This Statistic code will return both a gradient and an intercept value.</p>\n</div></td></tr></table></div>" }, "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg", "valueCode" : "oo" }], "url" : "http://hl7.org/fhir/observation-statistics", "identifier" : [{ "system" : "urn:ietf:rfc:3986", "value" : "urn:oid:2.16.840.1.113883.4.642.1.1126" }, { "use" : "old", "system" : "urn:ietf:rfc:3986", "value" : "urn:oid:2.16.840.1.113883.4.642.1.395" }], "version" : "6.0.0-ballot2", "name" : "StatisticsCode", "title" : "Statistics Code", "status" : "active", "experimental" : false, "date" : "2022-12-01T09:29:23+11:00", "publisher" : "HL7 (FHIR Project)", "contact" : [{ "telecom" : [{ "system" : "url", "value" : "http://hl7.org/fhir" }, { "system" : "email", "value" : "fhir@lists.hl7.org" }] }], "description" : "The statistical operation parameter -\"statistic\" codes.", "jurisdiction" : [{ "coding" : [{ "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm", "code" : "001", "display" : "World" }] }], "caseSensitive" : true, "valueSet" : "http://hl7.org/fhir/ValueSet/observation-statistics", "content" : "complete", "concept" : [{ "code" : "average", "display" : "Average", "definition" : "The [mean](https://en.wikipedia.org/wiki/Arithmetic_mean) of N measurements over the stated period." }, { "code" : "maximum", "display" : "Maximum", "definition" : "The [maximum](https://en.wikipedia.org/wiki/Maximal_element) value of N measurements over the stated period." }, { "code" : "minimum", "display" : "Minimum", "definition" : "The [minimum](https://en.wikipedia.org/wiki/Minimal_element) value of N measurements over the stated period." }, { "code" : "count", "display" : "Count", "definition" : "The [number] of valid measurements over the stated period that contributed to the other statistical outputs." }, { "code" : "total-count", "display" : "Total Count", "definition" : "The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values." }, { "code" : "median", "display" : "Median", "definition" : "The [median](https://en.wikipedia.org/wiki/Median) of N measurements over the stated period." }, { "code" : "std-dev", "display" : "Standard Deviation", "definition" : "The [standard deviation](https://en.wikipedia.org/wiki/Standard_deviation) of N measurements over the stated period." }, { "code" : "sum", "display" : "Sum", "definition" : "The [sum](https://en.wikipedia.org/wiki/Summation) of N measurements over the stated period." }, { "code" : "variance", "display" : "Variance", "definition" : "The [variance](https://en.wikipedia.org/wiki/Variance) of N measurements over the stated period." }, { "code" : "20-percent", "display" : "20th Percentile", "definition" : "The 20th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." }, { "code" : "80-percent", "display" : "80th Percentile", "definition" : "The 80th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." }, { "code" : "4-lower", "display" : "Lower Quartile", "definition" : "The lower [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." }, { "code" : "4-upper", "display" : "Upper Quartile", "definition" : "The upper [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." }, { "code" : "4-dev", "display" : "Quartile Deviation", "definition" : "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." }, { "code" : "5-1", "display" : "1st Quintile", "definition" : "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." }, { "code" : "5-2", "display" : "2nd Quintile", "definition" : "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." }, { "code" : "5-3", "display" : "3rd Quintile", "definition" : "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." }, { "code" : "5-4", "display" : "4th Quintile", "definition" : "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." }, { "code" : "skew", "display" : "Skew", "definition" : "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)." }, { "code" : "kurtosis", "display" : "Kurtosis", "definition" : "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)." }, { "code" : "regression", "display" : "Regression", "definition" : "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." }] }
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.
FHIR ®© HL7.org 2011+. FHIR R6 hl7.fhir.core#6.0.0-ballot2 generated on Tue, Dec 3, 2024 23:24+0000.
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