Table 1. Demographic table of 40 participants used to validate the automated measures of TDLU involution.

	Pre-Menopausal	Post-Menopausal
n	20	20
Cohort, n (%)
Nurses’ Health Study	5 (25)	12 (60)
Nurses’ Health Study II	15 (75)	8 (40)
Year of benign breast disease diagnosis, n (%)
≥1978 to <1988	3 (15)	4 (20)
≥1988 to <1998	16 (80)	12 (60)
≥1998 to 2000	1 (5)	4 (20)
Age at benign breast disease diagnosis, n (%)
30 to 39	8 (40)	1 (5)
40 to 49	10 (50)	6 (30)
50 to 59	2 (10)	6 (30)
≥60	0 (0)	7 (35)