How The Swedish Mammography Study Should’ve Been Analyzed
We reviewed four stories on the Swedish mammography study that appeared in the journal Cancer last week. Three of the four stories gave a pretty clear indication that there were methodological concerns about the Swedish research (of the four reviewed, only HealthDay offered no such hint):
• 4th paragraph of AP story: “The new study has major limitations and cannot account for possibly big differences in the groups of women it compares.”
• 1st paragraph of LA Times blog story: “Critics charged that the study was poorly designed and potentially vastly misleading.”
• 2nd sentence of NY Times story: “Results were greeted with skepticism by some experts who say they may have overestimated the benefit.”
But none of the stories did a very complete job of explaining those potential limitations. Because of the confusion that must be occurring in the minds of women — especially those in their 40s — this is a time in which journalism must rise to the need and do a better job of evaluating evidence and helping readers make sense of what appear to be conflicting findings.
I was in Chapel Hill, North Carolina, when the study was published and had the chance to talk about it with former U.S. Preventive Services Task Force member, and a recognized thought leader on issues of prevention and especially of screening tests, Dr. Russell Harris, Professor and Director of the Health Care and Prevention Concentration of the University of North Carolina (UNC) School of Public Health. Read more »
*This blog post was originally published at Gary Schwitzer's HealthNewsReview Blog*
