Although the CDM database for each institution is built inside a firewall, the risk of re-identification requires management because of risks of data leakage and misuse or overuse of data by inside researchers. Tools in CDM become more advanced as practical uses of CDM increases. The unspecified number of users accessing CDM increases alongside its total use.
So we conducted a survey about the perceived risk of re-identification in OMOP-CDM DB. The result has been just published, which indicates CDM users in Korea generally attributed high reliability for privacy protection to the intrinsic nature of CDM. Still, The necessity for a coordinating consortium to define and manage the re-identification risk of CDM was urged.