Table 1:

Study visit schedule (X=1 visit) by menstrual cycle month (2 menstrual cycles at baseline and ~24 menstrual cycles during treatment) in a study of isoflavones-induced changes in breast density at yearly intervals and other outcomes at quarterly intervals in premenopausal women

Group & Subgroup		Menstrual cycle month
		Baseline	Intervention
	N	−1 & −2	1	2	3	4	5	6	7	8	9	10	11	12†
Control/1	33	X, X	X			X			X			X
Control/2	33	X, X		X			X			X			X
Control/3	33	X, X			X			X			X			X
Soy/1	33	X, X	X			X			X			X
Soy/2	33	X, X		X			X			X			X
Soy/3	33	X, X			X			X			X			X

^†Pattern continued through year 2 (N, up to 24 cycles)