Review by Richard Lehman – 02/15/2021 – 4:16am

Data Request Number: 2021-4602 Is the scientific purpose of the research proposal clearly described?: Yes Will request create or materially enhance generalizable scientific and/or medical knowledge to inform science and public health?: Yes Can the proposed research be reasonably addressed using the requested data?: Unsure, further clarification from requestor is needed Please use this space to provide any comments, feedback or concerns (optional):

The proposed analysis is extremely thorough and labor intensive, especially if the image grading is intended to be done independently by more than one assessor (desirable but not specified). It depends on the existence of comprehensive files of high quality endoscopic images which can be shared with the investigators. 

Recommendation for this data request: Approve