Posted 12/1/11 on Common Sense Family Doctor
A few weeks ago, I presented Family Medicine Grand Rounds at Georgetown University School of Medicine on resolving conflicts between screening guidelines. During the question and answer session, Department Chair James Welsh, MD asked how evidence from carefully conducted clinical trials can possibly overcome powerful emotional stories of “saved lives.” I answered that evidence-based medicine’s supporters must fight anecdotes with anecdotes. For every person who believes his or her life was extended by a PSA test or a mammogram, statistics show that many more are temporarily or permanently injured as a result – and their stories matter too. As blogger Kevin Pho, MD wrote about the USPSTF’s recent prostate cancer guideline, “Task Force advocates will need to put a human face on the complications stemming from prostate cancer screening” in order to convince physicians and patients that it’s okay to stop. Indeed, news stories about PSA test-related complications such as this one by Associated Press writer Marilynn Marchione will go a long way in balancing the scales.
An insightful commentary published in JAMA last month took this point one step further by asserting that narratives deployed to support evidence-based guidelines should include not only patients’ stories, but the story of the guideline developers themselves: