Table 1. Overdiagnosis rates as a function of age and assuming an average lead time of 24 months Age (y) DCIS Invasive All Cancer 40 0.5 0.3 0.3 50 1.2 0.7 0.8 60 2.8 1.8 2.1 70 8.4 6.0 6.5 80 19.6 13.9 14.8 Rates of overdiagnosis for all breast cancers are less than 1% for women...