[Answered]: In the mid-20th century, there was a study of…

In the mid-20th century, there was a study of early detection of breast cancer. As part of the study, 31,000 women in a major city were offered screening mammograms. Of these women, 20,200 accepted the screening, while 10,800 refused. Of those that chose to have screening, 23 died from breast cancer in the five years following screening. Of those that refused screening, 16 died of breast cancer in the five years following screening.