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Association of sociodemographic factors and prostate-specific antigen (PSA) testing

Clinical Biochemistry
DOI: 10.1016/j.clinbiochem.2014.08.006
  • Hot Spot Analysis Maps
  • Prostate-Specific Antigen Testing
  • Psa
  • Sociodemographic Variables
  • Education


Abstract Objectives There are conflicting recommendations regarding the use of prostate specific antigen (PSA) as a screening test. Integral to this debate is an understanding of who is currently being tested. The purpose of this study was to provide a detailed account of PSA testing practices in a major Canadian city (Calgary, Alberta) and to identify variables that may affect access to the PSA test. Design and methods PSA test counts were retrieved from Calgary Laboratory Services' Laboratory Information System from January 1, 2011 to December 31, 2011. A total of 75,914 individual PSA tests were included in our analysis. The frequency of PSA testing was plotted onto a dissemination area map of Calgary using ArcGIS software. Associations with sociodemographic variables were tested using Poisson regression. Results The median PSA value was 0.93μg/L and the median age at collection was 58years. Forty-three percent of men aged 60–69 received a PSA test. Visible minority status ‘Black’ (P=0.0002) and Métis status (P=0.0075) were associated with lower PSA testing frequencies, while median household income (P=<0.0001) and university education (P=<0.0001) were associated with higher PSA testing frequencies. Conclusion There are areas in Calgary which are significantly over or under tested relative to the mean. The amount of PSA testing in men <50years of age is increasing, which is contrary to PSA testing guidelines.

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