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Table 2 Proportion of cancers with time of diagnosis advanced to the year of screening, by year*

From: Overdiagnosis in breast cancer screening: the importance of length of observation period and lead time

Years after screen

Percentage of diagnoses advanced to screen year

1

86

2

64

3

48

4

35

5

26

6

20

7

15

8

11

9

9

10

7

  1. By year at which diagnosis would have taken place in the absence of screening