Impact of numeracy on understanding of prostate cancer risk reduction in PSA screening

Prostate-specific antigen (PSA) screening for prostate cancer in men of average risk remains controversial. Patients’ ability to incorporate risk reduction data into their decision-making may depend on their numeracy. We assessed the impact of patients’ numeracy on their understanding of the risk reduction benefits of PSA screening. Men attending a general internal medicine clinic were invited to complete a survey. Four versions of the survey each included a three-item numeracy test and PSA risk reduction data, framed one of four ways: absolute (ARR) versus relative risk reduction (RRR), with or without baseline risk (BR). Respondents were asked to adjust their...

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