Table 3.

Number of women included in the control and intervention group

	Nr. of women in the control arm	Nr. of women in the intervention arm
Age trial	106,953	53,883
Model D	N/A*	N/A
Model E	10,000,000	10,000,000
Model M	4,000,000	4,000,000
Model S	5,000,000	5,000,000
Model W	2,000,000	2,000,000

All models simulated at least about 20 times as many women in the control group and 40 times as many women as in the intervention group. The number of women simulated was selected by each model to balance feasibility of simulation time with model output that yields relatively smooth incidence and mortality curves.

^*Model D uses entirely analytical formulations to evaluate the impact of screening and treatment on breast cancer incidence and mortality, i.e., the number of women simulated does not apply to Model D.