Objectives
To assess prostate cancer (PCa) screening practices in primary care since the initial United States Preventive Services Task Force (USPSTF) recommendation against prostate specific antigen (PSA) testing for older men, and to assess primary provider variation associated with PCa screening.
Patients and Methods
Our study population included 160, 211 men age >= 40 with at least 1 visit in a primary care clinic in any of the study years in a large, integrated health system. We conducted a retrospective cohort study using electronic medical record data from January 2007 through December 2014. Yearly rates of screening PSA testing by primary care provider (PCP), rates of rescreening and rates of prostate biopsies were assessed.
Results
Annual PSA screening testing declined from 2007 to 2014 in all age groups as did biennial and quadrennial screening. Yearly rates declined for men >= age 70, from 22.8 % to 8.9 %, ages 50–69, from 39.2 % to 20 % and ages 40–49, from 11 % to 4.6 %. Overall rates were lower for African American men vs. non-African American men; for men with a family history of PCa, rates were similar or slightly higher than for those without a family history. PCP variation associated with ordering of PSA did not substantially change following the USPSTF recommendations. While the number of men screened and rates of follow-up PCa screening declined in 2011–2014 compared to 2007–2010, similar rescreening rates were noted for men age 45–75 with initial PSA levels < 1ng/ml or 1–3 ng/ml in both the earlier and later cohorts. For men age > 75 with initial PSA level < 3 ng/ml screened in both cohorts, follow-up screening rates were similar. Rates of prostate biopsy declined for men >=age 70 in 2014 compared to 2007. For men who had PSA screening, rates of first prostate biopsy increased in later years for African American men and men with a family history of PCa.
Conclusions
PCa screening declined from 2007 to 2014 even in higher risk groups and follow-up screening rates were not related to previous PSA level. However, rates of first prostate biopsy for men who had a PSA were higher for men with increased risk for PCa in later years. Variation in PSA testing was noted among PCPs. Future work should further explore sources of variation in screening practices and implementation of risk-based strategies for PCa screening in primary care.