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Primary care physicians need to interpret results of randomised controlled trials assessing the efficacy of screening tests, but there is no evidence that they interpret screening-related statistics correctly.
A National sample of 412 US primary care physicians was asked in 2010 and 2011 to say in which of two scenarios a cancer screening test saved lives: (A) a screening test for cancer X is associated with an improved 5-year survival (if screened: 99% survival, if not screened: 68%) and more detection of stage 1 cancers (if screened: 54% detection, if not screened: 36% detection); (B) a screening …
Competing interests None.