<?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:obo_purl="http://purl.obolibrary.org/obo/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:metadata_def="http://data.bioontology.org/metadata/def/" xmlns:metadata="http://data.bioontology.org/metadata/"> <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBI_0000785"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/IAO_0000030"/> <rdfs:label>controlled variable specification</rdfs:label> <rdfs:label xml:lang="en">study design controlled variable</rdfs:label> <obo_purl:IAO_0000115>Controlled variable specification is a part of a study design. They are the entities that could vary, but are kept constant to prevent their influence on the effect of the independent variable on the dependent.</obo_purl:IAO_0000115> <obo_purl:IAO_0000115 xml:lang="en">Controlled variable specification is a part of a study design. They are the entities that could vary, but are kept constant to prevent their influence on the effect of the independent variable on the dependent.</obo_purl:IAO_0000115> <obo_purl:IAO_0000117>Dani Welter</obo_purl:IAO_0000117> <obo_purl:IAO_0000117>PERSON: Bjoern Peters</obo_purl:IAO_0000117> <obo_purl:IAO_0000117>PERSON: Alan Ruttenberg</obo_purl:IAO_0000117> <obo_purl:IAO_0000117>PERSON: Chris Stoeckert</obo_purl:IAO_0000117> <obo_purl:IAO_0000111>controlled variable specification</obo_purl:IAO_0000111> <obo_purl:IAO_0000112>In a study in which gene expression is measured in patients between 8 month to 4 years old that have mild or severe malaria and in which the hypothesis is that gene expression in that age group is a function of disease status, age is a controlled variable.</obo_purl:IAO_0000112> <obo_purl:IAO_0000114 rdf:resource="http://purl.obolibrary.org/obo/IAO_0000122"/> <obo_purl:IAO_0000116>In the Philly 2013 workshop the label was chosen to distinguish it from "controlled variable" as used in statistical modelling</obo_purl:IAO_0000116> <obo_purl:IAO_0000116 xml:lang="en">2/2/2009 Original definition: Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent their influence on the effect of the independent variable on the dependent. Every experiment has a controlling variable, and it is necessary to not change it, or the results of the experiment won't be valid</obo_purl:IAO_0000116> <obo_purl:IAO_0000118>controlled variable</obo_purl:IAO_0000118> <obo_purl:IAO_0000119>WEB: http://en.wikipedia.org/wiki/Control_variable</obo_purl:IAO_0000119> <metadata_def:prefLabel>controlled variable specification</metadata_def:prefLabel> <metadata_def:prefLabel xml:lang="en">study design controlled variable</metadata_def:prefLabel> <metadata_def:mappingLoom>studydesigncontrolledvariable</metadata_def:mappingLoom> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/OBI_0000785"/> <metadata:prefixIRI>OBI:0000785</metadata:prefixIRI> <obo_purl:IAO_0000232>2009-03-16: work has been done on this term during during the OBI workshop winter 2009 and the current definition was considered acceptable for use in OBI. If there is a need to modify thisdefinition please notify OBI.</obo_purl:IAO_0000232> </owl:Class> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/OBI_0000785"> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/OBI_0000785"/> </rdf:Description> </rdf:RDF>