Tipping the Balance of Benefits and Harms to Favor Screening Mammography Starting at Age 40 Years

Abstract

Using a computer model, this study sought to determine the threshold breast cancer risk at which the balance of benefits and harms of starting mammography screening at age 40 years equals that of c... Background: Timing of initiation of screening for breast cancer is controversial in the United States. Objective: To determine the threshold relative risk (RR) at which the harm–benefit ratio of sc...