Comparison of Benefits and Harms of 3 Controversial Cancer Tests

Expected Outcomes When 1,000 Women Aged 40-49 Years Are Screened Annually Eith Mammography for 10 Years
510-690 women will have at least 1 false-positive result.
60-80 women will have a false-positive result that leads to a biopsy.
23 women will be diagnosed with breast cancer.
11 or fewer women will be overdiagnosed with breast cancer.
0.1-1.6 deaths from breast cancer will be prevented.

Source: Adapted from Welch and Passow [18].