I noted this study about women doing their own breast compression during mammograms in WebMD with no citation except to JAMA Internal Medicine. So I looked that up, "Self-compression Technique vs Standard Compression in Mammography A Randomized Clinical Trial," Philippe Henrot, MD1; Martine Boisserie-Lacroix, MD2; Véronique Boute, MD3; et al., a French study using 549 women.
The results of this study echo earlier research that found allowing women to control compression during a mammogram doesn’t reduce the quality of the image but does reduce the level of discomfort women report during the procedure.
In September 2017, the U.S. Food and Drug Administration gave clearance to a digital mammography system that allows women to increase or decrease the amount of compression applied to the breast before the mammogram starts.
But before I located it, I found a 1993 article published in Radiology, vol. 186, no. 1 with the same results, using 109 women. And it may have been referenced in the literature—I don’t have access to the full text. Think of the pain women could have avoided for 25 years if someone had paid attention and followed through. "Impact of patient-controlled compression on the mammography experience." P J Kornguth, B K Rimer, M R Conaway, D C Sullivan, K E Catoe, A L Stout, J S Brackett
https://jamanetwork.com/journals/jamainternalmedicine/article-abstract/2723076
https://www.breastcancer.org/research-news/less-pain-when-women-control-mammo-compression
https://www.radiologybusiness.com/topics/quality/self-compression-mammography-image-quality-pain
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