EVS makes available a web site for users to suggest new terms or changes to existing terms in the NCI Thesaurus, NCI Metathesaurus, and other terminologies partnered with EVS such as CTCAE and NPO. In 2019 the site averaged about 500 visits by 300 unique visitors each month; a single visit/submission sometimes covers multiple terms (e.g., a single submission requested 28 new ECG test result values for CDISC). Not all visits result in submissions.
CDISC is one of the busiest users of the Term Suggestion application. The nature of term suggestions means this application usage will always be volatile. A CDISC meeting or spreadsheet can generate a large number of terms one month and drop off substantially the next.
Number of suggestions to CDISC concepts in NCIt, per month