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4.2.12.395 4.3.14.316 Code System http://hl7.org/fhir/observation-statistics http://terminology.hl7.org/CodeSystem/observation-statistics

Vocabulary Work Group   Maturity Level : 0 Informative Use Context : Any

This is a code system defined by the FHIR project.

Summary

Defining URL: http://hl7.org/fhir/observation-statistics http://terminology.hl7.org/CodeSystem/observation-statistics
Version: 4.1.0
Name: StatisticsCode
Title: StatisticsCode
Definition:

The statistical operation parameter -"statistic" - codes codes.

Committee: Orders and Observations Work Group ??
OID: 2.16.840.1.113883.4.642.1.395 2.16.840.1.113883.4.642.1.1126 (for OID based terminology systems)
Source Resource XML / JSON

This Code system is used in the following value sets:

  • ValueSet: StatisticsCode (The statistical operation parameter -"statistic" - codes) codes.)
  • ValueSet: StatisticsCode (The statistical operation parameter -"statistic" codes.)

The statistical operation parameter -"statistic" - codes codes.

This code system http://hl7.org/fhir/observation-statistics http://terminology.hl7.org/CodeSystem/observation-statistics defines the following codes: totalcount
Code Display Definition
average Average The [mean](https://en.wikipedia.org/wiki/Arithmetic_mean) of N measurements over the stated period period.
maximum Maximum The [maximum](https://en.wikipedia.org/wiki/Maximal_element) value of N measurements over the stated period period.
minimum Minimum The [minimum](https://en.wikipedia.org/wiki/Minimal_element) value of N measurements over the stated period period.
count Count The [number] of valid measurements over the stated period that contributed to the other statistical outputs outputs.
total-count Total Count The total [number] of valid measurements over the stated period, including observations that were ignored because they did not contain valid result values values.
median Median The [median](https://en.wikipedia.org/wiki/Median) of N measurements over the stated period period.
std-dev Standard Deviation The [standard deviation](https://en.wikipedia.org/wiki/Standard_deviation) of N measurements over the stated period period.
sum Sum The [sum](https://en.wikipedia.org/wiki/Summation) of N measurements over the stated period period.
variance Variance The [variance](https://en.wikipedia.org/wiki/Variance) of N measurements over the stated period period.
20-percent 20th Percentile The 20th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period period.
80-percent 80th Percentile The 80th [Percentile](https://en.wikipedia.org/wiki/Percentile) of N measurements over the stated period period.
4-lower Lower Quartile The lower [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period period.
4-upper Upper Quartile The upper [Quartile](https://en.wikipedia.org/wiki/Quartile) Boundary of N measurements over the stated period period.
4-dev Quartile Deviation 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.
5-1 1st Quintile 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 population.
5-2 2nd Quintile 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 population.
5-3 3rd Quintile 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 population.
5-4 4th Quintile 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 population.
skew Skew 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) [Wikipedia](https://en.wikipedia.org/wiki/Skewness).
kurtosis Kurtosis Kurtosis is a measure of the "tailedness" of the probability distribution of a real-valued random the probability distribution of a real-valued random variable. Source: [Wikipedia](https://en.wikipedia.org/wiki/Kurtosis) [Wikipedia](https://en.wikipedia.org/wiki/Kurtosis).
regression Regression 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.

 

See the full registry of value sets code systems defined as part of FHIR.


Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies See Code System for further information.
Source The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
Display The display (used in the display element of a Coding ). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code