StatisticsCode - HL7 Terminology (THO) v5.3.0

HL7 Terminology (THO)
5.3.0 - Publication International flag

This page is part of the HL7 Terminology (v5.3.0: Release) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: StatisticsCode

Official URL: http://terminology.hl7.org/CodeSystem/observation-statistics		Version: 0.1.0
Draft as of 2020-04-09	Responsible: HL7 (FHIR Project)	Computable Name: StatisticsCode
Other Identifiers: id: urn:oid:2.16.840.1.113883.4.642.1.1126

The statistical operation parameter -“statistic” codes.

This Code system is referenced in the content logical definition of the following value sets:

This case-sensitive code system http://terminology.hl7.org/CodeSystem/observation-statistics defines the following codes:

Code	Display	Definition
average	Average	The mean of N measurements over the stated period.
maximum	Maximum	The maximum value of N measurements over the stated period.
minimum	Minimum	The minimum value of N measurements over the stated period.
count	Count	The [number] of valid measurements over the stated period that contributed to the other statistical 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.
median	Median	The median of N measurements over the stated period.
std-dev	Standard Deviation	The standard deviation of N measurements over the stated period.
sum	Sum	The sum of N measurements over the stated period.
variance	Variance	The variance of N measurements over the stated period.
20-percent	20th Percentile	The 20th Percentile of N measurements over the stated period.
80-percent	80th Percentile	The 80th Percentile of N measurements over the stated period.
4-lower	Lower Quartile	The lower Quartile Boundary of N measurements over the stated period.
4-upper	Upper Quartile	The upper Quartile Boundary of N measurements over the stated period.
4-dev	Quartile Deviation	The difference between the upper and lower Quartiles 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.
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.
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.
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.
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.
kurtosis	Kurtosis	Kurtosis is a measure of the "tailedness" of the probability distribution of a real-valued random variable. Source: Wikipedia.
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 This Statistic code will return both a gradient and an intercept value.