Khairnar R, et al. - In this retrospective study, researchers assessed the change in utilization of prostate-specific antigen (PSA) screening, post-2008 and 2012 US Preventive Services Task Force (USPSTF) recommendations, and evaluated trends and determinants of receipt of PSA screening in the Medicare population. Male Medicare beneficiaries utilized Medicare Current Beneficiary Survey data and linked administrative claims from 2006-2013. During the study period, the 2008 and 2012 USPSTF recommendations against PSA screening were related to declines in utilization of PSA screening. Findings revealed that the odds of receiving PSA screening declined by 29% in men aged ≥ 65 years after 2012 recommendations and by 17% in men aged ≥ 75 years after 2008 recommendations. In affecting utilization patterns of health services, USPSTF recommendations were found to play a significant role.