• David Arterburn, Robert Wellman, Emily O Westbrook, Tyler R Ross, David McCulloch, Matt Handley, Marc Lowe, Chris Cable, Steven B Zeliadt, and Richard M Hoffman.
• Group Health Research Institute, 1730 Minor Ave, Ste 1600, Seattle, WA 98101. E-mail: arterburn.d@ghc.org.
• Am J Manag Care. 2015 Feb 1; 21 (2): e130-40.

ObjectivesTo examine the relationships among implementing decision aids (DAs) for benign prostatic hyperplasia (BPH) and prostate cancer (PRCA), and treatment rates and costs.Study DesignA pre-post observational evaluation of a quality improvement initiative in a healthcare system in Washington state.MethodsMen with BPH seen in urology clinics and all men diagnosed with localized PRCA were identified for an intervention period, in which urologists were instructed to order a DA for every patient with those conditions, and a historical control period. Outcomes were 6-month rates of surgery for BPH, any active treatment (hormone therapy, radiation, or surgery) for PRCA, and total healthcare costs. Results During the intervention, DAs were delivered to 22% of men with recent BPH drug treatment, 24% of men with untreated BPH, and 56% of men with PRCA. DA implementation was associated with a 32% lower rate of surgery among men with treated BPH (rate ratio [RR], 0.68; 95% CI, 0.49-0.94) and a nonsignificant 22% lower rate of surgery among men with previously untreated BPH (RR, 0.78; 95% CI, 0.50-1.22). For PRCA, DA implementation was associated with a 27% lower rate of active treatment (RR, 0.73; 95% CI, 0.57-0.93). We found no significant associations between DA implementation and costs of care for either condition.ConclusionsImplementing patient DAs was associated with lower rates of elective surgery for previously treated BPH and active treatment for localized PRCA; however, implementation of these DAs was not associated with lower costs of care.

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