Does each institution need to have their own IRB determination letter?

If using ICPSR’s Virtual Data Enclave to access the restricted use data, only one IRB letter from one of the collaborating institutions is needed since all institutions will use the same ICPSR Virtual Data Enclave workspace.

If using the Secure Download method for access, each application needs to provide an IRB letter as this makes sure that each institution’s IRB knows that researchers at their institution will be in possession of the restricted use data.

With either method, please make sure the IRB letter corresponds with the Research Project Title in the application, and the lead Investigator or a research staff member listed on the application from the issuing institution is named on the IRB letter.