Does research with existing datasets require IRB review?

Frequently Asked Question

Research projects involving analysis of secondary data from pre-approved datasets or repositories where the data has been de-identified (i.e., no one can trace the data back to the individuals from whom they were derived) do not require IRB review.

For a list of pre-approved Secondary Datasets and to learn more about when analysis of a dataset does not require prior IRB approval, see the link below.
HRPP: De-Identified Publicly Available Datasets Guidance