Initiative to reduce bone scans for low-risk prostate cancer patients: A quasi-experimental before-and-after study in a Veterans Affairs hospital.

Purpose: Bone scans (BS) are a low-value test for asymptomatic men with low-risk prostate cancer. We performed a quality improvement intervention aimed at reducing BS for these patients.

Methods and materials: The intervention was a presentation that leveraged the behavioral science concepts of social comparison and normative appeals. Participants were multidisciplinary stakeholders from the Radiation Oncology and Urology services at a Veterans Affairs hospital. We determined the baseline rate of BS by retrospectively analyzing cases of asymptomatic men with newly diagnosed low-risk prostate cancer. For social comparison, we presented contemporary peer BS rates in the United States-including Veterans Affairs hospitals. For normative appeals, we reviewed guidelines from various professional groups. To analyze the effect of this intervention, we performed a quasi-experimental, uncontrolled, before-and-after study.

Results: During the 1-year period before the intervention, 32 of 37 patients with low-risk prostate cancer (86.5%) received a BS. The contemporary peer rate was approximately 30%. All reviewed guidelines recommended against BS. During the 1-year period after the intervention, the rate of BS was reduced to 65.5% (19 of 29 patients; P = .043 by one-sided Fisher's exact test).

Conclusions: We observed a modest reduction in guideline-discordant BS after the quality improvement intervention. BS rates might be influenced by initiatives that combine social comparisons with appeals to professional norms.