ASPPH logo


Member Research & Reports

Member Research & Reports

UNC Study: Doctors Not Adequately Informing Patients of Pros and Cons Before Cancer Screenings

Though cancer screening has come a long way, physicians still do not thoroughly discuss the pros and cons of these procedures with patients before decisions to undertake the screenings are made, according to a new study co-authored by a physician from The University of North Carolina’s Gillings School of Global Public Health.


[Photo: Dr. Michael Pignone]

The study, “Lack of Shared Decision Making in Cancer Screening Discussions: Results from a National Survey”, published online by the American Journal of Preventive Medicine, found that doctors frequently tell patients the advantages of cancer screening procedures for breast, colorectal, and prostate cancers, but much less often discuss disadvantages. These practices run counter to established shared decision-making guidelines.

“Cancer screening and a number of other medical services are not all just plain benefit,” says study co-author Dr. Michael Pignone, adjunct professor of health behavior at UNC’s Gillings School of Global Public Health and professor of medicine at UNC’s School of Medicine.

“People should really know what they are getting into,” he says.

There were also marked disparities in how physicians discussed these options with men and women. Overall, depending upon the type of cancer screening discussed, between 63 and 71 percent of the time, physicians explained that the testing was optional. However, in only 43 to 57 percent of the cases involving women were the patients asked if they wanted screening; when men were involved, more than 70 percent of the patients were asked whether they wanted testing.

Among all study subjects, 69 to 93 percent (depending on the cancer) underwent screening, and 55 to 76 percent said they would definitely make the same decision to undergo the screening again, even if the cons of the procedures were articulated.

Dr. Pignone said patients can improve their ability to participate in shared decision making by arriving at the appointment to discuss specific questions about the procedures as it relates to their health, values and quality of life.

“A prepared and informed patient is likely to get the most out of their encounter with their doctor,” he said.

However, he and his co-authors reinforce that accepted shared decision-making protocols make it incumbent upon the physician to adequately inform patients of all health implications of the screening procedures.

The full study can be found here.