Hazard ratios and 95% confidence intervals for risk of breast cancer in relation to number of nevi, E3N cohort (n = 89,802).

aAdjusted for age (timescale), education, menopausal status, age at menopause (in postmenopausal women), use of MHT (in postmenopausal women), and use of premenopausal progestogens, and stratified according to year of birth in 5-y categories.bModel 2 additionally adjusted for personal history of BBD.cModel 3 additionally adjusted for personal history of BBD and family history of breast cancer.dModel 4 additionally adjusted for BMI, height, physical activity, age at menarche, age at first full-term pregnancy, parity, breastfeeding, use of OCs, history of mammographic exam, UV dose in county of birth, and UV dose in county of residence at inclusion.