Toward quality peer review: Outcomes of peer review across provincial radiation oncology programs.

205 Background: Review of treatment plans by a second radiation oncologist is an important quality indicator in radiation oncology. Peer review (PR) can improve quality of care in individual patients by detecting clinical and planning issues and recommending plan changes. This study reports the frequency and nature of these changes across all 14 radiation oncology programs (ROPs) in Ontario, Canada. Methods: We identified all peer-reviewed curative treatment plans delivered in Ontario within a 3-month study period between Dec 2013-Nov 2014 using Cancer Care Ontario’s Activity Level Reporting System, where data on treatment intent and date, disease site treated, PR status, timing of PR, and nature of recommended changes were available. Results: There was considerable variation in the proportion of plans peer-reviewed across ROPs (70.2%, range: 40.8-99.2%). Over the study period, 5,561 curative treatment plans were peer-reviewed and 3.3% had changes recommended. Of those, 21.0% had major clinical and re-pla...