Review by Richard Lehman – 01/05/2017 – 7:20am

Data Request Number: 2016-1171 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?: Yes, or it’s highly likely Please use this space to provide any comments, feedback or concerns (optional):

Looking through the stats section, I was still unclear how the immortal time bias was being addressed, though I assume this is implicit in the methodology. On future occasions it would be helpful for data applicants to specify in their resubmission exactly how they had addressed issues of concern. 

Recommendation for this data request: Approve