3.

Estimated trade-off shown as a ratio* of the number of BC deaths averted to cases overdiagnosed from mammography screening

Source	Ratio of BC deaths averted to cases overdiagnosed
* Additional data provided in manuscript text.
UK’s Independent Panel on Breast Cancer Screening3 for women invited to screening from age 50 for next 20 years	1:3
Mandelblatt et al.29Biennial screening from 50 to 74 yearsBiennial screening from 40 to 74 years	1:2.71:2.6
Hersch et al.30 (based on data from Barratt et al.31) for biennial screening from age 50 over 20 years)	1:4-5
Canadian Task Force32 for women aged 50-69 years screened biennially for 11 years	1:4
Paci et al. (Euroscreen)27 for biennial screening starting at 50-51 years (with follow-up to age 79)	2:1