Table 1. (Scenario 1) The number of breast cancer cases in the intervention group for the short term users (Group A) and long term users (Group B).

Time	Breast cancers		Time	Breast cancers
	Group A	Control		Group B	Control
1	11	18	3.5	27	20.75
2	17	20.5	4.5	32	22.13
3	27	21	5.5	34.5	23.38

The numbers of CHT users were 6277, and there were 6020 in the control group. The time variable is time since randomization.