Table 4.

Number of females screened to save a life, number of females screened per radiation-induced-breast cancer death and number of females screened per radiation-induced breast cancers

DDREF	Age range (years)	Screening rounds attended	Females screened to save a life	Females screened per radiation-induced breast cancer death	Females screened per radiation-induced breast cancer
1	50–70	7	238 (158–318)	36,856	7068
	47–73	9	185 (123–247)	26,634	5108
2	50–70	7	238 (158–318)	73,712	14,137
	47–73	9	185 (123–247)	53,268	10,216

DDREF, dose and dose effectiveness factor.

Data are given for the age ranges 50–70 years and 47–73 years, for DDREFs of 1 and 2, for MGD of 3 mGy and a 20% reduction in breast cancer mortality in the invited population. The bracketed values show results for 15–30% reductions in breast cancer mortality.