@prefix fhir: <http://hl7.org/fhir/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

# - resource -------------------------------------------------------------------

[] a fhir:CodeSystem ;
  fhir:id [ fhir:v "observation-statistics"] ;
  fhir:meta [
     fhir:lastUpdated [ fhir:v "2020-04-09T21:10:28.568+00:00" ]
  ] ;
  fhir:text [
     fhir:status [ fhir:v "generated" ]
  ] ;
  fhir:url [ fhir:v "http://terminology.hl7.org/CodeSystem/observation-statistics"], [ fhir:v "http://terminology.hl7.org/CodeSystem/observation-statistics"] ;
  fhir:identifier ( [
     fhir:system [ fhir:v "urn:ietf:rfc:3986" ] ;
     fhir:value [ fhir:v "urn:oid:2.16.840.1.113883.4.642.1.1126" ]
  ] [
     fhir:system [ fhir:v "urn:ietf:rfc:3986" ] ;
     fhir:value [ fhir:v "urn:oid:2.16.840.1.113883.4.642.1.1126" ]
  ] ) ;
  fhir:version [ fhir:v "1.0.0"], [ fhir:v "1.0.0"] ;
  fhir:name [ fhir:v "StatisticsCode"], [ fhir:v "StatisticsCode"] ;
  fhir:title [ fhir:v "StatisticsCode"], [ fhir:v "StatisticsCode"] ;
  fhir:status [ fhir:v "draft"], [ fhir:v "draft"] ;
  fhir:experimental [ fhir:v "false"], [ fhir:v "false"] ;
  fhir:date [ fhir:v "2020-04-09T21:10:28+00:00"], [ fhir:v "2020-04-09T21:10:28+00:00"] ;
  fhir:publisher [ fhir:v "Health Level Seven International"], [ fhir:v "Health Level Seven International"] ;
  fhir:contact ( [
     fhir:telecom ( [
       fhir:system [ fhir:v "url" ] ;
       fhir:value [ fhir:v "http://hl7.org" ]
     ] [
       fhir:system [ fhir:v "email" ] ;
       fhir:value [ fhir:v "hq@HL7.org" ]
     ] )
  ] [
     fhir:telecom ( [
       fhir:system [ fhir:v "url" ] ;
       fhir:value [ fhir:v "http://hl7.org" ]
     ] [
       fhir:system [ fhir:v "email" ] ;
       fhir:value [ fhir:v "hq@HL7.org" ]
     ] )
  ] ) ;
  fhir:description [ fhir:v "The statistical operation parameter -\"statistic\" codes."], [ fhir:v "The statistical operation parameter -\"statistic\" codes."] ;
  fhir:copyright [ fhir:v "This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html"], [ fhir:v "This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html"] ;
  fhir:caseSensitive [ fhir:v "true"] ;
  fhir:valueSet [ fhir:v "http://terminology.hl7.org/ValueSet/observation-statistics"] ;
  fhir:content [ fhir:v "complete"] ;
  fhir:concept ( [
     fhir:code [ fhir:v "average" ] ;
     fhir:display [ fhir:v "Average" ] ;
     fhir:definition [ fhir:v "The [mean](https://en.wikipedia.org/wiki/Arithmetic_mean) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "maximum" ] ;
     fhir:display [ fhir:v "Maximum" ] ;
     fhir:definition [ fhir:v "The [maximum](https://en.wikipedia.org/wiki/Maximal_element) value of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "minimum" ] ;
     fhir:display [ fhir:v "Minimum" ] ;
     fhir:definition [ fhir:v "The [minimum](https://en.wikipedia.org/wiki/Minimal_element) value of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "count" ] ;
     fhir:display [ fhir:v "Count" ] ;
     fhir:definition [ fhir:v "The [number] of valid measurements over the stated period that contributed to the other statistical outputs." ]
  ] [
     fhir:code [ fhir:v "total-count" ] ;
     fhir:display [ fhir:v "Total Count" ] ;
     fhir:definition [ fhir:v "The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values." ]
  ] [
     fhir:code [ fhir:v "median" ] ;
     fhir:display [ fhir:v "Median" ] ;
     fhir:definition [ fhir:v "The [median](https://en.wikipedia.org/wiki/Median) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "std-dev" ] ;
     fhir:display [ fhir:v "Standard Deviation" ] ;
     fhir:definition [ fhir:v "The [standard deviation](https://en.wikipedia.org/wiki/Standard_deviation) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "sum" ] ;
     fhir:display [ fhir:v "Sum" ] ;
     fhir:definition [ fhir:v "The [sum](https://en.wikipedia.org/wiki/Summation) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "variance" ] ;
     fhir:display [ fhir:v "Variance" ] ;
     fhir:definition [ fhir:v "The [variance](https://en.wikipedia.org/wiki/Variance) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "20-percent" ] ;
     fhir:display [ fhir:v "20th Percentile" ] ;
     fhir:definition [ fhir:v "The 20th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "80-percent" ] ;
     fhir:display [ fhir:v "80th Percentile" ] ;
     fhir:definition [ fhir:v "The 80th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "4-lower" ] ;
     fhir:display [ fhir:v "Lower Quartile" ] ;
     fhir:definition [ fhir:v "The lower [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "4-upper" ] ;
     fhir:display [ fhir:v "Upper Quartile" ] ;
     fhir:definition [ fhir:v "The upper [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period." ]
  ] [
     fhir:code [ fhir:v "4-dev" ] ;
     fhir:display [ fhir:v "Quartile Deviation" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "5-1" ] ;
     fhir:display [ fhir:v "1st Quintile" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "5-2" ] ;
     fhir:display [ fhir:v "2nd Quintile" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "5-3" ] ;
     fhir:display [ fhir:v "3rd Quintile" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "5-4" ] ;
     fhir:display [ fhir:v "4th Quintile" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "skew" ] ;
     fhir:display [ fhir:v "Skew" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "kurtosis" ] ;
     fhir:display [ fhir:v "Kurtosis" ] ;
     fhir:definition [ fhir:v "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:code [ fhir:v "regression" ] ;
     fhir:display [ fhir:v "Regression" ] ;
     fhir:definition [ fhir:v "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." ]
  ] ) .

# -------------------------------------------------------------------------------------

