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Table 1 Estimated effect of early breast cancer (BC) detection, in the 40-80 year age interval, with different screening strategies.

From: Effectiveness of early detection on breast cancer mortality reduction in Catalonia (Spain)

Periodicity

Age interval for screening exams

Effect of early detection

  

MR (%)

YLG

per woman screened

YLG

per BC detected

Annual

40-74

29.8

0.222

1.874

Biennial

40-74

22.9

0.165

1.387

Annual

45-74

28.9

0.205

1.727

Biennial

45-74

22.3

0.152

1.283

Annual

50-74

27.4

0.180

1.515

Biennial

50-74

21.3

0.134

1.127

Annual

40-69

27.6

0.219

1.845

Biennial

40-69

21.2

0.162

1.369

Annual

45-69

26.7

0.201

1.697

Biennial

45-69

21.2

0.151

1.272

Annual

50-69

25.3

0.176

1.485

Biennial

50-69

19.6

0.132

1.109

  1. Relative BC mortality reduction (MR) and Years of Life Gained (YLG). Catalonia, cohorts born in 1955-59.