Slide 40.htm Research Putting it all Together: Balancing Benefits and Harms of MammographyConclusion (all age groups):Biennial screening produced 70% to 99% of the benefit of annual screening, with a significant reduction in the number of mammograms required and therefore a decreased risk for harms.http://www.uspreventiveservicestaskforce.org/uspstf09/breastcancer/brcanrs.htm Previous Slide Contents Next Slide Current as of December 2012 Internet Citation: Slide 40.htm. December 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/clinicians-providers/kt/webinars/tfmethods/tfmethodsld40.html