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Table 3 Cancers diagnosed at and after the first three screens, Gothenburg Trial

From: Overdiagnosis and overtreatment of breast cancer: Estimates of overdiagnosis from two trials of mammographic screening for breast cancer

Detection occasion

Number screened

Invasive cancers only

All cancers

First screen

18,197

55

70

First interval

18,197

7

9

Second screen

17,005

27

28

Second interval

17,005

14

14

Third screen

17,093

36

41

Third interval

17,093

21

23