A couple of years ago one of my undergraduate students was interested in how men felt about overdiagnosis in prostate cancer screening. He surveyed 30 men who worked for Dartmouth College Facilities or the local police and fire departments. Their mean age was 50 years; half had been screened with prostate-specific antigen. Ten percent would not agree to screening if it resulted in more than 1 overtreated person per 1 cancer death adverted, and 63% would not agree to screening if it resulted in 25 or more overtreated persons per 1 death adverted.