Table 1. Use cases for patient lists in an IDR.

These are cases we have implemented on our IDR.

List use case	Objectives	List origin
1. List from IDR Query	Internal query defining a study cohort. Researchers can return for additional data without cluttering results with original sample-defining values	Internal query
2. Add to Existing Study Database	Get EHR data for consented study participants	External (study)
3. EHR-derived List	Get population data on a clinically relevant group of patients for practice management or “Meaningful Use”	External (EHR)
4. Honest Brokering	Allows dissemination of brokered de-identified data and connection with IDR data	External
5. Biobanking	Add phenotypes to biosamples	Internal or external
6. Access to Study/Registry Data	Allows queries of study and EHR data together	Internal query
7. Promoting Collaboration	Share aggregate information on a population to promote collaborator interest	Internal or external