Table 5.

Breast cancer mortality outcomes at 10-years follow-up.

	Mammograms per woman	Breast cancer deaths per 100,000 women		Rate ratio BC deaths	Breast cancer ** mortality reduction
		intervention group	control group
Age trial	4.84	16	21	0.75	25% (3 to 42%) *
Model average	5.23	19	23	0.85	15.3% [range 13–17%]
Model D	5.30	17	20	0.83	17.0%
Model E	4.90	20	25	0.83	16.9%
Model M	5.43	20	23	0.86	13.6%
Model S	5.29	22	25	0.87	13.2%
Model W	5.23	19	22	0.84	16.0%

^*95% confidence interval in parentheses

^**The Age trial measured the effect of annual screening of women aged 40 to 49 on breast cancer mortality. Therefore, the trial and the simulation models excluded breast cancer deaths that occurred in women diagnosed with breast cancer before age 40 and after age 49.