Does shared decision making for PSA screening empower patients?

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e549 Background: Participant characteristics affect shared decision making. In a randomized trial of physician (MD) educational interventions to improve cancer screening guideline compliance, we studied patient (PT) and MD recall of discussions and how PT characteristics affected recall. Methods: In a cluster-randomized trial of educational supports for MDs, we are enrolling an age- (30-89 years) and sex-stratified sample of 216 PTs who underwent a physical examination at two urban hospitals, 18 for each of 12 primary care MDs. Screening guideline formatting (color-coding) and academic detailing were randomly assigned in a 2x2 design. Immediate post-encounter surveys recorded PT and MD recall of screening discussions. Results: Of the first 174 participants, 92 were men. PTs were diverse (69% white) and well educated (73% college degree). When MDs reported a prostate specific antigen (PSA) screening discussion, 32% of PTs did not, and 26% of MDs disagreed when PTs reported the discussion occurred. Further, when the MD reported recommending screening, 26% of PTs disagreed, and 33% of MDs disagreed when their patients reported a recommendation. Overall, agreement between all PTs and MDs on whether screening was recommended was fair (kappa = 0.29) but there was no agreement for PTs over 70 years (kappa = -0.03). PTs reported more elements of shared decision making than MDs (data not shown). When both PT and MD or the MD alone reported that all elements of shared medical decision making had occurred, agreement on whether screening was recommended improved (kappa = 0.54 and 0.45, respectively). When PTs disagreed with their MD, they more often reported recommending for screening not against (11 vs. 4). Conclusions: In a highly educated, diverse PT population, PTs and MDs surveyed immediately after their encounter often disagreed on whether PSA screening was discussed and recommended. Disagreement was worse with older PT age but improved when both PT and MD or the MD alone reported all shared decision making elements. Clinical trial information: NCT02430948.