Impact of USPSTF recommendations on utilization of PSA screening in Medicare beneficiaries.
166 Background: Previous studies assessing the impact of the United States Preventive Services Task Force (USPSTF) recommendations on utilization of prostate-specific antigen (PSA) screening have not investigated longer-term impacts of the 2008 recommendations nor have they investigated the impact of the 2012 recommendations in the Medicare population. The study aim was to evaluate change in utilization of PSA screening, post USPSTF recommendations of 2008 and 2012, and to assess trends and determinants of receipt of PSA screening in the Medicare population. Methods: This retrospective study of male Medicare beneficiaries utilized Medicare Current Beneficiary Survey (MCBS) data and linked administrative claims from 2006-2013. Beneficiaries aged ≥65 years, with continuous enrollment in Parts A and B for each year they were surveyed were included in the study cohort. Beneficiaries with self-reported or claims-based diagnosis of prostate cancer were excluded. Beneficiaries with Medicare eligibility due to end stage renal disease or disability were also excluded. The primary outcome was receipt of PSA screening. Other measures include age groups (65-74 and ≥75), time periods (pre- and post-2008 and 2012 recommendations), and sociodemographic variables. Results: The study cohort consisted of 11,028 beneficiaries, who were predominantly white (87.56%), married (69.25%), and unemployed (84.4%); 52.21% beneficiaries were aged ≥75. Declining utilization trends for PSA screening were observed only in men aged ≥75 after 2008 recommendations and in both age groups after 2012 recommendations. The odds of receiving PSA screening declined by 17% percent in men aged ≥75 after the 2008 recommendations and by 29% in men aged ≥65 after the 2012 recommendations. Conclusions: The USPSTF recommendations of 2008 and 2012 against PSA screening were associated with declines in utilization of PSA screening during the study period. USPSTF recommendations play a significant role in affecting utilization patterns of health services. Future studies should evaluate if the proposed 2017 update to these recommendations advocating shared decision-making for PSA screening in men aged 55-69 increase utilization in this age-group.