Importance: Many women dread undergoing mammography, and some may not attend or reattend breast cancer screening because of the discomfort or pain induced by breast compression.
Objective: To evaluate the noninferiority of the self-compression mammography technique for reducing breast thickness compared with standard compression.
Design, Setting, And Participants: This prospective, parallel-group, noninferiority randomized clinical trial was conducted from May 7, 2013, to October 26, 2015, at 6 cancer care centers in France.