Plasma and urinary androgens in women with varying degrees of risk of breast cancer

Using as indices of risk the age at menarche, age at first child, family history of breast cancer and the amount of urinary aetiocholanolone excreted, 386 normal women aged 30–69 yr were divided into 4 groups with a mean calculated risk of breast cancer of 0.016, 0.023, 0.051 and 0.111.