The Clinical Measurement Ontology (CMO), Measurement Methods Ontology (MMO), and Experimental Condition Ontology (XCO) are currently being developed at the Rat Genome Database. For more information about these vocabularies please see Shimoyama et al. Three ontologies to define phenotype measurement data. Front Genet. 2012;3:87. Epub 2012 May 28 or contact us (http://rgd.mcw.edu/contact/index.shtml).
Term:
percentage of study population developing malignant colorectal tumors during a period of time
The number of new cases of malignant colorectal tumors appearing in a study population during a certain period compared to the total number of individuals in the study population, expressed as a percentage. Malignant colorectal tumors are abnormal growths of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function, which display the properties of anaplasia, invasiveness and metastasis, and which occur in the large intestine, the distal portion of the alimentary canal, especially in the colon and/or rectum, the segment of the large intestine between the cecum and the anal canal.