NCIt definition : Data terms or concepts that have been determined to be identical between projects
or contexts.;
Alternative definition : CDISC-GLOSS: A structured item characterized by a stem and response options together
with a history of usage that can be standardized for research purposes across studies
conducted by and for NIH. NOTE: The mark up or tagging facilitates document indexing,
search and retrieval, and provides standard conventions for insertion of codes. [NCI,
CaBIG]. See also item, item (PRO), stem, data element, data element identifier.;